Consortium of Intermountain Herbaria Collections

Select a collection to see full details.


A. Michael Powell Herbarium

The herbarium occupies one wing of the Warnock Science Building. There are approximately 100,000 specimens housed in 112 cases. The major collections include plants of Trans-Pecos Texas, which forms the largest part of the northern part of the Chihuahuan Desert Region in the United States. It is a prominent regional research collection that is available to botanists around the world and is also a valuable teaching facility for both graduate and undergraduate students interested in various botanical disciplines or in wildlife biology. The first significant collections are those made by O.E. Sperry in 1935-1946. The physical herbarium was probably started by L.C. Hinkley but B.H. Warnock was responsible for the largest early collection of plants and major development of the herbarium as a research facility. Another major contributor was M.C Johnston. More recently, the herbarium has grown through the efforts of A.M. Powell, in whose honor the university renamed the herbarium in 2003.
Contact: A. Michael Powell (


Academy of Natural Sciences of Drexel University

The herbarium of the Academy of Natural Sciences (PH) is the oldest institutional herbarium in the United States. It is a national resource for material from 1750-1850. The diatom herbarium (ANSP) is managed separately.
Contact: Tatyana Livshultz (


Ada Hayden Herbarium (Iowa State University)

The Ada Hayden Herbarium has the largest collection of Iowa plants and fungi, containing over 600,000 specimens of vascular plants, bryophytes, fungi, and lichens. Functioning primarily as a research facility important for taxonomic studies (occurrence, distribution, and relationships of plants), it is also used for identifying unknown plants. Specimens are loaned to specialists at other institutions around the world to support research. Loans from other institutions allow our researchers access to other herbaria. Recently, herbaria have become a source of materials to use in molecular studies and to support basic research on biodiversity.
Contact: Deborah Lewis, Curator (


Albion College

The Albion College Herbarium (ALBC) is a teaching collection of about 14,000 specimens, including 10,000 sheets of vascular plants and another 4,000 specimens of bryophytes, algae, lichens, and fungi. Most of its holdings are from the lower peninsula of Michigan. The herbarium of alumnus Charles W. Fallass, '1873 comprises the core of the vascular plant collection. Other contributors include former faculty members William J. Gilbert (1916-1994), Ewell A. Stowell (1922-2009), and 1956 alumnus Maynard C. Bowers (1930-). The Gilbert collections include algae from the S. Pacific. The Bowers collections include mosses from Finland and the western US.
Contact: J. Dan Skean, Jr. (


Amistad National Recreation Area

Contact: Weckesser, Wendy (


Andrews University Herbarium

Specialty: Southwestern Michigan; northern Indiana; New World Urticaceae. Date Founded: 1960.
Contact: Dennis Woodland, Curator (
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Appalachian State University, I. W. Carpenter, Jr. Herbarium

The I.W. Carpenter, Jr. Herbarium contains approximately 29,000 specimens. The three main functions of the ASU Herbarium are for teaching, maintenance of vouchers, and development of a research herbarium with a focus on the flora of the Southern Appalachians.
Contact: Dr. Zack E. Murrell, Curator (


Archbold Biological Station

The Archbold Biological Station herbarium has over 4200 vascular plant specimens and is located in the laboratory of the Plant Ecology Program in the Richard Archbold Research Center at Archbold Biological Station in Lake Placid, FL. The collection consists predominately of plants collected from central and south Florida, with a strong emphasis on the southern Lake Wales Ridge near and on the property of Archbold Biological Station. Additional collections include bryophytes and lichens. The Archbold Biological Station is also known as the Leonard J. Brass Herbarium, named in honor of worldwide plant collector, palm expert, explorer, conservationist, and botanist, L.J. Brass (1900-1971). Dr. Brass founded this herbarium and collected the majority of its specimens. In February 2010, we also dedicated this collection to Dorothy Mundell, in appreciation of her long-time service to the herbarium. Carl Weekley and Rebecca Yahr also made significant contributions to the ABS herbarium. Eric Menges is currently the curator. Nomenclature used as determined by Wunderlin ( or (
Contact: Menges, Eric (


Arizona State University Fruit and Seed Collection

Contact: Patricia Fall (
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Arizona State University Pollen Collection

Contact: Patricia Fall (
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Arizona State University Vascular Plant Herbarium

The Arizona State University Vascular Plant Herbarium is the second largest in the Arid Southwest with over 285,000 specimens. Our collection of Cactaceae is one of the best in the world, being particularly rich in cytological vouchers.

ASU Type Specimens:

Contact: Elizabeth Makings (


Arizona Western College Herbarium

Contact: Dr. Joann M Chang, Science Division Chair (


Arkansas Natural Heritage Commission Herbarium

The Herbarium of the Arkansas Natural Heritage Commission consists primarily of specimens collected in the course of statewide ecological and biological inventory work conducted by the Arkansas Natural Heritage Program. Many of the specimens represent species that are rare in the state or were collected from rare or unusual habitats. The goals of the collection are 1) to provide a reference collection for work performed by Natural Heritage Commission staff and their conservation partners, 2) to house voucher specimens for rare plant records in the database of the Arkansas Natural Heritage Program, and 3) to voucher plants of ecologically sensitive or otherwise significant lands, including those contained within the State's System of Natural Areas. While most specimens are from Arkansas, special care is being made to assemble a collection of plants from surrounding states that are not presently known in Arkansas but are likely to be found there.
Contact: Brent Baker (
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Arkansas State University

Contact: Travis Marsico, Curator (


Arkansas Tech University Herbarium

APCR comprises approx. 22000 specimens, concentrating on the flora of Arkansas, especially the Interior Highlands. Important collectors whose material is housed in the collection include Maxine Clark, Richard Davis, Delzie Demaree, Dwight M. Moore, E.J. Palmer, and Gary Tucker. The emphasis of our work is the Vascular Flora of Arkansas Project.
Contact: George Johnson (
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Auburn University, John D. Freeman Herbarium

The John D. Freeman Herbarium (AUA) at Auburn University houses the state's largest collection of dried flowering plants, gymnosperms, ferns, bryophytes, fungi, and lichens. Concentrating on specimens collected in Alabama and the southeastern US over the past one hundred years, we are now diversifying our plant holdings from around the world through exchanges and gifts. This valuable botanical resource provides critical information to students and scientists across many disciplines as well as to the general public.
Contact: Leslie R. Goertzen / Curtis J. Hansen ( /


Austin Peay State University Herbarium

Contact: Mason Brock, Collections Manager (


Bandelier National Monument

The flora of Bandelier is now one of the best documented, and most current, vascular plant inventories available for any unit in the National Park Service. The completion of a Revised Checklist of the Vascular Plants of Bandelier National Monument (Jacobs 2012) represents the first significant update to the flora of the monument in the 20 years since completion of the initial Flora of Bandelier project (Jacobs, 1989). Over 50 additional taxa are documented for the monument, bringing the total from around 746 species in 1989 to 800+ in 2012.

The relatively high diversity of vascular plants (800+ taxa documented for 33,000 acre area) reflects the complex topography and wide range of climatic settings available across a nearly 5000-foot elevation range from the Rio Grande at 5300-feet to the summit of Cerro Grande at 10100-feet. However over 15% of the flora is non-native reflecting the legacy of historic landuse and modern disturbances. The monuments herbarium serves the dual purpose of documenting the monuments flora, while also providing a key botanical reference in support of research and monitoring efforts.
Contact: ()


Benedictine College Herbarium

The Benedictine College is a regional herbarium with a focus on species from Eastern KS and western MO, with an emphasis on Atchsion County, KS. The collection has approximately 9000 specimens and houses the collection of H. W. Blocker (circa 1950), a monk and biology professor from the abby associated with the College.
Contact: Dr. Travis Almquist (
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Bennington College Herbarium

Flora of Bennington County VT and adjoining areas, with some collections from other regions associated with student and faculty research projects
Contact: Kerry Woods (
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Berea College

Contact: Ralph L. Thompson (


Bitterroot National Forest Herbarium

The Bitterroot National Forest herbarium contains specimens from across western Montana and eastern Idaho including Missoula, Mineral, Ravalli, Flathead, Stillwater and Shoshone counties. With specimens dating back to the early 1900’s, the BNF herbarium’s collection not only demonstrates the rich history of the area but the broad habitats encompassed by this forest. The Bitterroot National Forest continues to add to its collections and make collection information readily available for collaborative use.
Contact: Taylor-Davenport, Robin M -FS (
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Black Hills State University Herbarium

The Herbarium has ca. 45,000 specimens and is one of the two largest herbaria in South Dakota. BHSC features the world’s largest collection of the distinctive vascular flora of the ecologically unique Black Hills of South Dakota and Wyoming. The collection contains vascular plants, algae, bryophytes and lichens. In addition, the collection consists of approximately 4000 specimens of fungi and slime molds, which include nearly all of the South Dakota state records. The extant vascular plant collection includes a limited number of specimens from around the world; including collections by A. Eastwood, P.O. Schallert, L.S. Rose, J.A. Calder, B.C. Tharp, W.H. Duncan, A.E. Radford, J.M. Gillet, C.G. Pringle, O. Degner, P.A. Munz, E.J. Palmer, K. Biswas, and B. Rosengurtt. Other important collections include those of F.L. Bennett (former BHSC Curator) and M.L. Kravig (Orchidologist). BHSC is also home to one of the largest collections of Miocene age plant fossils from the Great Plains of North America, with at least 10,000 fossils housed from throughout the Great Plains. Type collections of several fossil species from J.R. Thomasson and M.L. Gabel are held in the collection. Grasses (Poaceae), hackberries (Celtis, Ulmaceae), sedges (Cyperaceae) and borages (Boraginaceae) are well represented.
Contact: Grace Kostel (

Bridgewater College Herbarium

Contact: Edgar Lickey (
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Brigham Young University, S. L. Welsh Herbarium

Note: We reorganized our image file structure on our server out of necessity; most specimen images will not be viewable until a solution for remapping images is developed.

Vascular Plants. The herbarium has completed databasing the non-seed vascular plants, gymnosperms, and most monocots (still working on the grasses). Dicots are an ongoing effort; they are only complete for select groups and recently cataloged material. Some records that are incomplete, duplicate sheets, or that otherwise need additional attention may not be uploaded for searching here.

The herbarium at BYU is recognized by the Index Herbariorum acronym 'BRY'. 'V' indicates the vascular plant portion of BRY housed in the S.L. Welsh Herbarium. The S.L. Welsh herbarium also houses a smaller collection gifted to Brigham Young University from the Ogden Forest Service, which maintains its Index Herbariorum acronym 'OGDF'. BRY also encompasses the Herbarium of Non-Vascular Cryptogams (including lichenized fungi), which is administered independently and curated by Steven Leavitt and emeritus curator Larry L. St.Clair.

Information made available here electronically, including specimen data and images, has been produced by support from Brigham Young University, NSF grant DBI–1203616, the Grand Canyon Trust, and a Utah-BLM Challenge Cost-Share agreement. Any opinions, findings, and conclusions or recommendations expressed in this material are those of our herbarium and do not necessarily reflect the views of the National Science Foundation or other supporting agencies.

Please acknowledge the use of BRY/OGDF specimens in publications or products that have benefitted from the use of these data.

Contact: Robert Johnson / Leigh Johnson (


BRIT Philecology Herbarium

Contact: Tiana Rehman (


Bureau of Land Management, Las Cruces District Office

The Las Cruces District Office manages land in Doña Ana, Grant, Luna, Otero, and Sierra counties in southwestern New Mexico. We maintain a reference collection, primarily of plants found on BLM land within the district, to aid plant identification in the office and document some of our activities.
Contact: Patrick Alexander (


Bureau of Land Management, San Luis Valley Field Office

The Herbarium of the San Luis Valley Field Office is a collection of primarily range land plants collected on BLM lands in Southern Colorado, with a focus on the San Luis Valley. The San Luis Valley is a high elevation, intermontane desert valley at the headwaters of the Rio Grande River.
Contact: Ben Billings (


Bureau of Land Management, Taos Field District Office

The Taos Field Office manages federal lands in Colfax, Harding, Rio Arriba, San Miguel, Santa Fe and Taos counties in northern New Mexico. We maintain a reference collection, primarily of plants found on BLM land within the district, to aid plant identification in the office and document some of our activities.
Contact: Lillis Urban (

Burgundy Center for Wildlife Studies, Coopers Cove Herbarium

Contact: Susan Hepler ()
Home Page:


Butler University, Friesner Herbarium

The Friesner Herbarium of Butler University, Indianapolis, Indiana, grew out of the personal collections of Dr. Ray C. Friesner, Professor and Chair of the Botany Department, 1920-1952. Many students and other Butler faculty have contributed plants through the years. In the 1930s and 1940s, Butler had an active Masters degree program in Botany with a focus on florisitics and ecology of the state. The collection currently houses over 100,000 specimens. Label data have been digitized for the ca. 50,000 sheets collected in Indiana. More information on the collection is available at
Contact: Rebecca W. Dolan (


Butler University, Friesner Herbarium, Indiana Plant Atlas

The Friesner Herbarium of Butler University, Indianapolis, Indiana, grew out of the personal collections of Dr. Ray C. Friesner, Professor and Chair of the Botany Department, 1920-1952. Many students and other Butler faculty have contributed plants through the years. In the 1930s and 1940s, Butler had an active Masters degree program in Botany with a focus on florisitics and ecology of the state. The collection currently houses over 100,000 specimens. Label data have been digitized for the ca. 50,000 sheets collected in Indiana. More information on the collection is available at
Contact: Rebecca Dolan, Director (


Caliente Field Office, Bureau of Land Management

The Caliente Field Office BLM manages approximately 750 herbarium specimens primarily collected from the Mojave and Mojave-Great Basin transition zone of Lincoln County, Nevada.
Contact: Jessicca Patterson (
Home Page:


Calvin College

The Calvin College Herbarium was founded in 1948 and contains approximately 8,500 specimens, of which over 6,000 are imaged. Most of the holdings are from West Michigan (Kent Co., Ottawa Co.) and Midwestern North America (incl. Nebraska, South Dakota and North Dakota). In addition, Calvin houses vouchers documenting flora at the Calvin College Ecosystem Preserve, Flat Iron Lake and the Grand Rapids area.
Contact: Dave Warners (


Campbell University Herbarium

Contact: Chris Havran (
Home Page:


Carnegie Museum of Natural History Herbarium

The Carnegie Museum herbarium (CM) has over 530,000 worldwide vascular plant specimens as well as the best representation in any herbarium of specimens from western Pennsylvania and the Upper Ohio Basin. CM holds the private herbarium of Hannibal and Tyrecca Davis containing 20,000 specimens with a concentration on Rubus (Rosaceae).
Contact: Bonnie L. Isaac (


Central Michigan University

The Central Michigan University Herbarium (CMC) strives to integrate research and education, providing centralized botanical resources, research facilities, and educational opportunities to the University and broader scientific community.
Contact: Anna Monfils, Director (


Chicago Botanic Garden

U.S.A., especially midwestern U.S.A. and Chicago region; Asteraceae; fungi; mosses; lichens; horticultural vouchers; China; Russia; Korea.
Contact: Nyree Zerega (


City of Alexandria Herbarium

Contact: Roderick Simmons (
Home Page:


Clemson University Herbarium

Contact: Dixie Z. Damrel (


Cochise County Herbarium

Contact: Cecile Lumer (


Coconino National Forest Herbarium

Contact: Debra Crisp (


College of William and Mary Herbarium

The herbarium of the College of William & Mary (WILLI) was formally organized in 1969, and has since grown to over 80,000 accessioned specimens representing most of our regional vascular plant species. About one half of our collection has been generated by faculty and student research which includes the production of 29 floras and a diversity of other projects. The remainder of the collection has been generated by exchanges with other herbaria, and gifts from individuals and agencies such as the Virginia Natural Heritage. Our focus is on the southeast U.S., with special emphasis on Virginia's Coastal Plain Physiographic Province.
Contact: Beth Chambers, Curator (


Colorado Mesa University, Walter A. Kelley Herbarium

The Walter Almond Kelley herbarium at Colorado Mesa University contains over 5,000 specimens, primarily from western Colorado and eastern Utah. It was founded in 1978.
Contact: Stephen Stern (
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Colorado State University - Pueblo

Colorado State University-Pueblo has a small herbarium housed within the Life Science Building. Our collection focuses on the Flora of Southeastern Colorado, including good representation of the Wet Mountains, Pueblo County, and the Spanish Peaks.
Contact: Brian Vanden Heuvel (brian.vandenheuvel [at]


Colorado State University Herbarium

Contact: Jennifer Ackerfield (


Columbus State University Herbarium

Contact: Kevin Burgess, Curator (
Home Page:


Converse College Herbarium

Contact: Douglas Jensen (


Cornell College Herbarium

Founded in 1967, the Cornell College Herbarium contains approximately 2,700 specimens with a heavy focus on Midwestern prairie plants. in addition, the herbarium contains collections of cucurbits,(especially species in the Guraniinae) from Costa Rica, Panama, Ecuador, Peru, French Guineana, and Suriname.
Contact: Dr. Marty Condon (
Home Page:


Dale A. Zimmerman Herbarium at Western New Mexico University

Contact: William R. Norris (


Deaver Herbarium (Northern Arizona University)

Number of Specimens: 110 000 Specialty: Colorado Plateau, especially northern Arizona; northeastern Mojave Desert; northern Arizona National Parks and Monuments; vascular plants of the San Francisco Peaks and Coconino National Forest. Important Collections: M. Baker; R. E. Collom; C. F. Deaver; D. Demaree; R. K. Gierisch; L. N. Goodding; G. Goodwin; H. D. Hammond; R. H. Hevly; M. E. Jones; T. H. Kearney; Max Licher; E. L. Little, Jr.; V. O. Mayes; A. M. Phillips; G. R. Rink; C. G. Schaack; J. J. Thornber; A. F. Whiting Incorporated Herbaria: FSLF (1000 specimens) in 1989. Notes: Name for Arizona State College changed to Northern Arizona University in 1966. ASC fungi transferred to MICH in 1998. ASC is temporarily housing NAVA, until the Navajo Natural Heritage builds a new building. Date Founded: 1930.
Contact: Tina Ayers ( (


Delaware State University, Claude E. Phillips Herbarium

The Claude E. Phillips Herbarium (DOV) at Delaware State University is the only public herbarium on the Delmarva Peninsula and houses over 150,000 specimens of vascular plants, ca. 35,000 specimens of bryophytes and 3,600 lichens. DOV’s collections span more than 200 years of botanical exploration in Delmarva and the neighboring states and include representative flora from other parts of the U.S. and the world.
Contact: Cynthia Hong-Wa (


Delta State University

Contact: Nina Baghai Riding, Director (


Desert Botanical Garden Herbarium Collection

Approximately 84000 specimens in collection, with emphasis on plants of the Southwest and northern Mexico, Cactaceae and Agavaceae.
Curator: Wendy C. Hodgson (
Associate Curator: Andrew Salywon
Contact: Andrew Salywon (


Devils Tower National Monument

Devils Tower National Monument was established in 1906 and is comprised of 1,347 acres in Crook County, Wyoming. It is located in northeastern Wyoming on the northwest edge of the Black Hills. The 867 foot high Devils Tower was formed by the intrusion of igneous material into softer sedimentary rocks which later eroded to expose the tower. It attracts thousands of climbers each year. Ponderosa pine forests/woodlands cover approximately 60% of the monument. Six types of prairie grasslands occupy roughly 30% of the area in small patches within the more dominant ponderosa pine forest and woodland. The Belle Fourche River flows through the eastern part of Devils Tower NM and forms part of its southern boundary. Deciduous forests/woodlands (including plains cottonwood riparian woodland) occur in about 5% of the monument. Early efforts to document the Monument’s flora included significant contributions by Laura Joyner, wife of an early superintendent, and George W. Giles, working for the Works Project Administration. The first comprehensive plant species inventory was carried out in 1981-1982 (H. Marriott). An extensive list of plant species for Devils Tower NM was reviewed and certified by Marriott in 2004. Ten additional species were found in a survey for plant species of concern in 2008 (B. Heidel) and additional information relevant to the status of several other species has been generated in recent years. The Monument's certified plant list currently is being updated, through fieldwork and review of secondary sources. It is estimated that the known flora contains on the order of 460 species. At this time, there are 800 plant specimens in Devils Tower NM herbarium which is housed at Mount Rushmore National Memorial museum.
Contact: ()


Dickinson State University Herbarium

The Dickinson State University Herbarium contains approximately 1000 specimens with a focus on the vascular plants of southwestern North Dakota. The herbarium is dedicated to serving the educational, scientific, and cultural needs of western North Dakota.
Contact: Craig W. Whippo (
Home Page:


Duke University

Contact: Michael D. Windham / Layne Huiet (mdw26 at / rlh22 at
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Earlham College

Contact: Brent Smith, Director (
Home Page:

East Tennessee State University Herbarium

Contact: Tim McDowell (
Home Page:


Eastern Kentucky University, Ronald L. Jones Herbarium

The EKU Herbarium (EKY) contains ~77,000 specimens and is the largest collection in Kentucky, and the second largest in the Kentucky-Tennessee region (surpassed only by the University of Tennessee). Most specimens are from central and eastern Kentucky, but also there is a good representation of western Kentucky and of the southeastern United States. There is also a set of woody plant specimens recently collected in Costa Rica. Nearly all specimens are of vascular plants. A number of important sets of specimens are housed at EKY, including sets from Lilley Cornett Woods, Maywoods Environmental and Educational Laboratory, Pine Mountain, Breaks Interstate Park, Brodhead Swamp, the headwater regions of the Green River, collections from the Kentucky State Nature Preserves Commission, collections of Mary Wharton, E.T. Browne, Raymond Athey, and county collections from Madison, Estill, Jackson, and Garrard Counties.
Contact: Brad R. Ruhfel (


Eastern Michigan University Herbarium

The Eastern Michigan University Herbarium (EMC) provides botanical resources, research facilities, and educational opportunities to the University and broader scientific community. The herbarium seeks to continue and develop the scientific acquisition, documentation and monitoring of the plants of Michigan and the Great Lakes Region including those that are threatened, endangered and rare. The herbarium contains over 30,000 vascular plant specimens, mosses, fungi, and algae. Most specimens are from Michigan and Ontario, Canada.
Contact: Margaret Hanes, Director (


Eastern Nevada Landscape Coalition

The Eastern Nevada Landscape Coalition's Herbarium specializes in the vascular plants of Nevada with particular emphasis on the Mojave and Great Basin Deserts.
Contact: Greg Gust (


Eastern New Mexico University Herbarium

Contact: Darren A. Pollock (


Ely Bureau of Land Management Herbarium

The Ely District BLM manages approximately 1500 herbarium specimens collected from throughout eastern and northern Nevada. The collection includes valuable historic specimens collected by Arthur Holmgren during his years at the U. S. Grazing Service from 1938-1941.
Contact: Maria Ryan (
Home Page:


Emory University Herbarium

The Emory University Herbarium (GEO) has more than 20,200 plant specimens, dating back to the early 1900s. The majority of the collection is composed of plants from the southeast USA collected by Don E. Eyles (aquatic plants), Robert F. Thorne (Flora of SW Georgia) and Madeline L. Burbanck (granite rock outcrop plants). Recent collections more focused on our growing global collection from the Mediterranean and Balkans (medicinal plants) and Australia (pollinator ecology).
Contact: Cassandra Leah Quave (; Tharanga Samarakoon (


Field Museum of Natural History

Phanerogams worldwide with emphasis on tropical and North America, especially rich in collections from Mexico, Guatemala, Costa Rica, Colombia, Venezuela, Ecuador, and Peru; pteridophytes worldwide with emphasis on Guatemala, Costa Rica, Ecuador, and Peru; bryophytes worldwide; mosses of North America, Central America, Andean South America, and Australasia; hepatics of north temperate, South America, and south temperate; all groups of fungi, especially basidiomycetes with emphasis on New World and lichenized fungi of north temperate and Central America; algae worldwide, especially Cyanobacteria; economic botany.
Contact: Christine Niezgoda (

Florida Department of Agriculture and Consumer Services, Division of Plant Industry

Founded: 1964. Specialty: Native and introduced plants of Florida, especially cultivated ornamentals. Collection includes about 12,000 dried plant specimens and a seed collection of about 1,500 vials.
Contact: Patti J. Anderson, Ph.D., Botanist (


Florissant Fossil Beds National Monument

The Florissant Fossil Beds National Monument Herbarium in Colorado contains a nearly complete record of all the flora found within our 6,000 acre boundaries. The Herbarium has been vouchered by William A. Weber, Professor and Curator Emeritus of the Herbarium, University of Colorado Museum of Natural History.
Contact: Conni J. O'Connor (conni_o'


Fort Hays State University Herbarium

Contact: Mitchell Greer (
Home Page:


Fort Laramie National Historic Site


Fort Lewis College Herbarium

Specialty of the collection is the vascular flora of southwestern Colorado, especially the San Juan Mountains. The herbarium also contains a small ethnobotanical collection transferred in 2013 from the Fort Lewis College department of Anthropology. This collection is filed separately but catalogued and searchable in the same database as the general collection. Additionally FLD contains a mycological collection of approximately 1700 specimens of principally wood decay and macrofungi with a geographic focus on southwestern Colorado and the greater southwestern United States. This collection is fully digitized and accessible via the Mycology Collections Portal.
Contact: Ross McCauley, Curator (
Home Page:


Francis Marion University Herbarium

Contact: Gerald Long (
Home Page:


Furman University, Ives Herbarium

Contact: Joe Pollard (
Home Page:


Garrett Herbarium, Natural History Museum of Utah

Contact: Elizabeth P. Johnson (


General Research Observations

This is a collection of general image supported observations submitted by general SEINet users.
Contact: SEINet Administrator (
Home Page:


George Mason University, Ted R. Bradley Herbarium

Specialty: Virginia; Missouri; Andros Island, Bahamas; Puerto Rico. Date Founded: 1967.
Contact: Andrea Weeks, Director (


Georgia Southern University Herbarium

Contact: John Schenk (


Georgia Southwestern State University Herbarium

Georgia Southwestern State University Herbarium in Americus, Georgia houses the Norris Collection. This collection was compiled by the late Dr. Robert A Norris. His collection is rather cosmopolitan with a concentration in the American Southwest.
Contact: Dr. Stephanie Harvey (
Home Page:


Gila National Forest Herbarium

Contact: Jenny Natharius (
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Grand Canyon National Park

Museum Collection Herbarium of the Grand Canyon National Park, P.O. Box 129, Grand Canyon, Arizona 86023-0129, U.S.A., (928) 638-7769
Contact: Colleen Hyde (


Grand Valley State University

The Grand Valley State University Herbarium (GVSC) is located in the Padnos Hall of Science (we will be moving to the new GVSU science building during the summer of 2015). The herbarium holds about 6000 specimens mostly from west Michigan
Contact: Dr. Tim Evans (


Granite Mountains Desert Research Center

The Sweeney Granite Mountains Desert Research Center Herbarium is used primarily as a teaching herbarium for visiting researchers and classes. This facility is part of the University of California's Natural Reserve System, which serves a mission of promoting a better understanding and wise management of arid lands, especially the California deserts. This regional herbarium holds specimens from the eastern Sierra Nevada, Mojave, Great Basin, and Sonoran Desert bioregions, with the primary focus being the east Mojave Desert of California. Our collection is completely databased (Filemaker Pro) and available upon request.
Contact: Jim André/Tasha La Doux (
Home Page:


Hendrix College Herbarium

We currently house 6000 specimens, mostly representing Central Arkansas. Major collectors include the late Hendrix biology faculty member G. Thomas Clark, David M. Johnson who collected here in the 1970s, and a nice set of most of the fern species of our area collected by the late Don Crank in 2010. The herbarium also vouchers pine specimens for current Hendrix biology faculty member Ann Willyard's research.
Contact: Ann Willyard (
Home Page:


Herbario Anetta Mary Carter

El Herbario HCIB del Centro de Investigaciones Biológicas del Noroeste alberga ejemplares herborizados de plantas vasculares de la flora del estado de Baja California Sur, y en menor medida a distintos puntos de las entidades adyacentes al mismo (Sonora, Baja California, California y Arizona). Actualmente la colección del Herbario sobrepasa los 30,000 ejemplares, cuyos datos se han capturado en una base de datos accesible para su consulta, con información geográfica, ecológica y curatorial.
Contact: José Luis León de la Luz (


Herbario de la Universidad Autónoma de Baja California

El Herbario BCMEX se fundó en marzo de 1981 siendo de tipo regional (en el sentido geográfico y biogeográfico), con el propósito de contar con una colección científica de la flora de la península de Baja California e islas adyacentes. Actualmente, se cuenta con aproximadamente 24,000 ejemplares, en su mayoría plantas vasculares (22,000) y en menor cantidad hongos y líquenes (2,000). Este acervo proviene de colectas sistemáticas, intercambios y donaciones de ejemplares provenientes de otras partes de México y suroeste de los Estados Unidos. Leer más:
Contact: Dr. José Delgadillo Rodríguez (,


Herbario de la Universidad de Sonora

La diversidad de plantas de Sonora refleja variados ecosistemas y tipos de vegetación: selva baja caducifolia, matorral espinoso de piedemonte y matorral espinoso costero, desierto sonorense, desierto chihuahuense, bosque madrense, pastizal desértico, y humedales como manglares y bosques de río. La flora del estado de Sonora, con un área de 184 mil 934 km², actualmente contiene 3 mil 603 taxones específicos e intraespecíficos documentados con ejemplares de herbario. El Herbario mas importante en Sonora es el Herbario USON de la Universidad de Sonora, su colección botánica supera los 22 mil ejemplares representativos de mas de 3.2 mil taxa de Sonora. El Herbario USON está adscrito al Departamento de Investigaciones Científicas y Tecnológicas de la Universidad de Sonora (DICTUS) y, por sus líneas de investigación, se encuentra dentro de la Academia de Conservación y Aprovechamiento de la Diversidad Vegetal (ACADIVE).
Contact: José Jesús Sánchez Escalante (


Herbario del Instituto Politécnico Nacional-Unidad Durango

El Herbario CIIDIR, del Instituto Politécnico Nacional en Durango, México, es una colección de muestras botánicas herborizadas y organizadas sistematicamente con información taxonómica, geográfica y ecológica. Cuenta con mas de 60,000 ejermplares integrados y mas de 30,000 en proceso, y con una base de datos automatizada que facilita la consulta de información sobre las plantas y la vegetación de Durango y de buena parte del norte de México. A partir de 2005 la colección lleva el nombre de "Mtra. Graciela Calderón Díaz-Barriga y Dr. Jerzy Rzedowski Rotter", en honor a dos connotados botánicos mexicanos, egresados politécnicos, que han apoyado el desarrollo de esta y otras colecciones botánicas en el país.​
Contact: Dra. María Socorro Gonzalez Elizondo (


Herbario Jesús González Ortega

El principal acopio de la flora de Sinaloa se encuentra en el herbario UAS de la Facultad de Agronomía de la Universidad Autónoma de Sinaloa, con una cantidad aproximada de 25,000 ejemplares.
Contact: Rito Vega Aviña (
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Herbario Regional CIAD-Mazatlán

Actualmente, el Herbario está conformado por 2307 ejemplares, pertenecientes a 918 especies, 503 géneros y 124 familias. La mayoría de las especies fueron recolectadas en el Área de Protección de Flora y Fauna “Meseta de Cacaxtla” y la Región Prioritaria para la Conservación “Monte Mojino”. Cabe enfatizar que todas las especies fueron identificadas por botánicos expertos en sus respectivos grupos taxonómicos.
Contact: Marcela Ruiz Guerrero (


High Plains Herbarium at Chadron State College

Contact: Steven B. Rolfsmeier (


Hillsdale College Herbarium

Contact: Ranessa Cooper (
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Hope College

Hope College Herbarium (HCHM) is located in room 3051 of the Schaap Science Center and holds about 8000 specimens mostly from the West Michigan area with a rich collection of asteraceous plants.
Contact: Jianhua Li (


Howard Payne University Herbarium

The Howard Payne University Herbarium was founded in 1965 and now includes about 60,000 specimens. It is particularly rich in specimens from Central Texas, particularly the Edwards Plateau, and Sonora and Baja Mexico, Mexico and has strong holdings of ferns from Texas. Its notable collectors include J.L. Blassingame, U.T. Waterfall, W.T. McCart, C.M. Rowell, Jr. and J. Stanford.
Contact: Dr. Marilyn Mathis (


Howard University Herbarium

The Howard University Herbarium (HUDC) is a collection of ca. 15,000 plant specimens housed in Just Hall on Howard University’s main campus. The collection includes a donation from the former Catholic University herbarium, with >1000 specimens from the Caribbean collected between 1890-1920. Other collection strengths include plants of the Mid-Atlantic, especially the DC metropolitan area. Charles Parker, Marie Clark Taylor and H. David Hammond also made substantial contributions the Howard University Herbarium.
Contact: Janelle Burke, Ph.D. (
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Huntington Botanical Gardens Herbarium

The Huntington Botanical Gardens Herbarium (HNT) was founded in the 1960’s by Myron Kimnach, director of the botanical gardens from 1962 to 1986. It is a depository of mostly exotic plant specimens used in research and teaching. The purpose of these specimens is to serve as voucher documentation for research projects, and as resources for plant identification. With over 10,000 specimens, it is an archive of vascular plants from around the world, with particular emphasis on plants from Mexico, Central America and South America. Important collections include those of F. Boutin, J. P. Folsom, D. R. Hodel, D. de Laubenfels, M. Kimnach and R. Moran. Plant families well-represented include Arecaceae, Cactaceae, Crassulaceae, Euphorbiaceae, and desert plants worldwide. In addition, the herbarium receives and provides loans of plant specimens used in active systematic research.
Contact: Tim Thibault (


Huntington University Herbarium

The Huntington University Herbarium contains 12,000 specimens, primarily from NE Indiana, dating back to the 1880s. The herbarium was founded ca. 1903 by Dr. Fred A. Loew.
Contact: Collin Hobbs (
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Illinois Natural History Survey

The herbarium contains 250,000 plant specimens and the fungarium contains 75,000 fungal specimens.
Specialty: Vascular plants and fungi of Illinois, southeastern and midwestern U.S., Great Smoky Mountains National Park; limited neotropical; recent Kyrgyzstan; Rosaceae subfamily Maloideae.
Date Founded: 1858.
Contact: Andrew Miller, Ph.D., Mycologist and Director (


iNaturalist Observations

Contact: ()


Indiana University Herbarium (Deam Herbarium)

The Department of Biology administers the Indiana University Herbarium (IND). Founded in 1885, the herbarium houses about 150,000 specimens of vascular plants, including the collections of Charles C. Deam on which the Flora of Indiana is based.
Contact: Eric Knox, Director (


Indiana University Southeast Herbarium

The Department of Biology (School of Natural Sciences) administers the Indiana University Southeast Herbarium (JEF). Founded in 1971.
Contact: David Winship Taylor, Curator (


Institute for Botanical Exploration

Founded in 1962, the Institute for Botanical Exploration has 235 000 holdings specializing in Lichens, bryophytes, and vascular plants worldwide, emphasis on Alaska, Mississippi, and adjacent states; tropical America (especially Amazon region).
Contact: Dr. Lucille McCook (
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Intermountain Herbarium (Utah State University)

Records in this database are of the vascular plants in the Intermountain Herbarium. Records for fungi, lichens and bryophytes are now being posted to the taxon-specific networks. The geographic focus of the Intermountain Herbarium is the Intermountain Region of western North America but its holdings come from many different countries. It even has one or more specimens from each of the seven continents. The collection is particularly rich in the Scrophulariaceae (traditional sense) and grasses, including voucher specimens of plants used by by the late D.R. Dewey in his cytogenetic studies of the Triticeae.
Contact: Paul Wolf (


J. F. Bell Museum of Natural History Herbarium

The Bell Museum of Natural History was established in 1872 by the state legislature. The Herbarium started in 1889 with the purchase of John Sandberg's private collection (6000 specimens). The representation of Minnesota's flora is unparalleled and the assemblage of historic flora of the Upper Midwest is among the best in the U.S. Additionally there are excellent collections of circumboreal and arctic material and historical collections of H. Rusby and R. Squires (1895-1896, Orinoco River delta), J.W. Congdon (1894-1903, California, especially the Yosemite region); South Pacific collections of J. Tilden, A.A. Heller, and J.W. Moore; and more recent Papua New Guinea flora (G. Weiblen and students). Currently the Herbarium contains approximately 940,000 botanical and mycological specimens combined. Only the vascular plant records are being posted to this site at this time.
Contact: Anita Cholewa, Curator (


James Madison University Herbarium

Contact: Conley McMullen (
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Jemez Mountain Herbarium

Contact: Charles and Yvonne Keller (
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Jewell and Arline Moss Settle Herbarium at SUNY Oneonta

The Jewell and Arline Moss Settle Herbarium is a small regional herbarium containing approximately 15,000 specimens, including vascular plants, bryophytes, lichens, fungi, and algae. The majority of its holdings are from central New York and Adirondack Park. Functioning primarily as a teaching herbarium, it also contains vouchers for New York State county floras and supports molecular and ecological research on plants of New York State.
Contact: Sean C. Robinson (
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Kaibab National Forest Herbarium

Contact: Michael Hannemann (


Kathryn Kalmbach Herbarium

The Kathryn Kalmbach Herbarium (KHD), a collection of over 60,000 vascular plant specimens, is a regional herbarium with a research focus on the species diversity of Colorado and the Southern Rocky Mountain region. The collection also contains species that are in cultivation at Denver Botanic Gardens. Most of the specimens within the collection have been digitized, and their photographs may be found online. Higher resolution images are also available upon request.
Contact: Melissa Islam, Head Curator (


Kent State University Herbarium

Founded in 1921, the Tom S. & Miwako K. Cooperrider Herbarium at Kent State University (KE) currently houses approximately 81,000 specimens of vascular plants, bryophytes, algae, and lichens. The collection primarily focuses on the flora of northeastern Ohio.
Contact: Dylan Stover (


Klamath National Forest Herbarium

The Klamath National Forest encompasses nearly 1.7 million acres of land straddling the California and Oregon border in the Klamath-Siskiyou Mountain Ranges. In the mountains to the west, the terrain is steep and rugged, while the east-side has gentler, rolling terrain of volcanic origin, sprinkled with buttes and valleys. Elevations range from 450 to 9,001 feet above sea level at Thompson Peak, on the Siskiyou-Trinity County divide. The Klamath National Forest is one of America’s most biologically diverse regions, due to the blending of four floristic provinces and boasts a center of coniferous diversity (19 species) in the Russian Wilderness. The Klamath National Forest Herbarium aims to preserve and record the many rare and endemic species unique to the region.
Contact: Erin Lonergan ( and M ()


Knox College Herbarium

The Knox College Herbarium is particularly strong in collections from western Illinois but has many collections from other parts of the western US.
Contact: Stuart Allison (
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Longwood University, Harvill-Stevens Herbarium

Contact: Erika Gonzalez-Akre, Curator (
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Louisiana State University Shreveport, D. T. MacRoberts Herbarium

The collection consists of about 17,000 specimens. Specializing in northwest Louisiana and southwest Arkansas vascular flora.
Contact: Michael MacRoberts (

LSU-Vascular Plants

Louisiana State University, Shirley C. Tucker Herbarium

Shirley C. Tucker Herbarium at Louisiana State University, Vascular Plant Collection: ca. 159,000 specimens, particularly from Louisiana and the Southeast, but also throughout North America and worldwide through exchange and collections. Families well-represented include Asteraceae, Fabaceae, Cyperaceae and Poaceae worldwide. Significant collections by Fr. G. Arsène, C. A. Brown, A. Featherman, N. F. Peterson, S.C. Tucker, L. E. Urbatsch, I. Vélez, and E. C. Wurzlow.
Contact: Jennifer S. Kluse, Collections Manager (


Louisiana Tech University Herbarium

Contact: Milan Vavrek ()
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Lundell Herbarium - University of Texas at Austin

The Lundell Herbarium (LL) is part of the Plant Resources Center, which houses the combined herbaria of the University of Texas Herbarium (TEX) and the Lundell Herbarium; the combined PRC collections include over one million specimens from all parts of the world and represent the fifth largest university herbarium in the United States (with the fourth largest university collection of vascular plants). The two herbaria (TEX and LL) are completely integrated and interfiled, although each sheet is marked as to its herbarium and should be cited as such. The Lundell Herbarium itself includes material amassed by Cyrus L. Lundell, who botanically explored portions of northern Central America and was the first and only director of the Texas Research Foundation of Renner, Texas, from 1946 until its dissolution in 1972. The Lundell Herbarium (LL) includes material collected through the Texas Research Foundation and other personal collections of Dr. Lundell collected in Mexico and Central America; some of these specimens formed part of the University of Texas at Dallas herbarium (referred to by the acronym UTD), where Lundell conducted research after the dissolution of the Texas Research Foundation, but all were combined into the the Lundell Herbarium (LL) when he donated the collection to the Plant Resources Center in the 1970s and 1980s. LL includes over 300,000 specimens and is especially rich in plants of Texas, the Yucatán Peninsula of Mexico, Guatemala, and Belize, as well as in the plant families of Lundell’s primary interest, especially Myrsinaceae and Celastraceae. No new material is being accessioned into LL.
Contact: Tom Wendt (


Luther College

The LCDI herbarium is a small collection used primarily for teaching and undergraduate research. It is particularly strong in the flora of northeastern Iowa.
Contact: Beth Lynch (


Lynchburg College, Ramsey-Freer Herbarium


Madrean Archipelago Biodiversity Assessment Observations

Contact: Thomas R. Van Devender (


Madrean Discovery Expeditions

Contact: Thomas Van Devender (


Marie Selby Botanical Gardens Herbarium

Contact: Bruce Holst / Antonio Toscano de Brito ( /


Marshall University

Contact: Emily Gillespie, Curator (
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Maryland Department of Natural Resources

Collection founded to document the rare species of Maryland; however, the collection houses a reference collection, particularly for difficult groups, e.g., Carex (Cyperaceae) is well-represented (~ 1000 sheets).
Contact: Christopher Frye (
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McNeese State University Herbarium

Contact: Ray Neyland (


Mecklenburg County Park and Recreation Herbarium

Contact: Catherine Luckenbaugh (
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Mesa Verde National Park

Contact: ()
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Miami University, Willard Sherman Turrell Herbarium

Miami University is the home of Ohio's largest herbarium, the Willard Sherman Turrell Herbarium. The herbarium's holdings of approximately 620,000 specimens are worldwide in both geographical and taxonomic coverage. The collection consists of 330,000 vascular plant specimens, as well as 140,000 bryophytes, 100,000 fungi, 35,000 lichens, 10,000 algae, and 5,000 fossil plants. There are several thousand type specimens contained in the collection, as well as many sets of cryptogamic exsiccatae. Active exchange programs are ongoing with many herbaria worldwide to ensure the continued breadth and depth of the collection. The W.S. Turrell Herbarium Fund is an endowment which benefits the herbarium, and is restricted to support of the research activities of the staff and students in systematic botany.
Contact: Michael Vincent, Curator (


Michigan State University

The MSU Herbarium was founded in 1863 with the donation of a large collection of plants from Michigan and the eastern U.S. Today, we remain focused on plant and fungal diversity from Michigan, but the collection is also rich in plants from Mexico and southeast Asia, and lichens from the Caribbean and the subantarctic region. With over half a million specimens, the MSU Herbarium is among the 50 largest herbaria in the United States, whereas the lichen collection, with 120,000 accessioned collections, is among the 10 largest in North America and, because of its geographical scope, of international importance.
Contact: L. Alan Prather (


Middle Tennessee State University

The Middle Tennessee State University (MTSU) Herbarium is housed in the new Science Building on Alumni Drive. The herbarium has approximately 23,000 specimens, and is currently being reorganized following the linear APG III model. We are part of the SERNEC NSF ADBC-TCN.
Contact: Ashley B. Morris, Curator (


Milwaukee Public Museum

The MPM herbarium (MIL) began with a donation of 5,190 plant specimens in 1883 to the new City of Milwaukee Museum from the Wisconsin Natural History Society. This early collection has some of the oldest material in the herbarium, dating back to the 1850s and is heavily European in origin. Today the collections number around 250,000 specimens including ca. 70 type specimens with over 50% of the material from Wisconsin and another 30% from the rest of North America. The collections are divided into vascular (107,000 records) and nonvascular (17,000 records) plants with associated data digitized.
Contact: Christopher Tyrrell, Collection Manager (


Minot State University

The herbarium of Minot State University contains specimens from the North Dakota counties that are least well represented in the older herbaria of the state. As specimens are collected, they are incorporated into an online checklist of North Dakota plants. The checklist also draws on information from specimens in other state herbaria.
Contact: Alexey Shipunov, Curator (


Mississippi Museum of Natural Science Herbarium

The Mississippi Museum of Natural Science Herbarium currently consists of over ~70,000 mounted plant specimens, with approximately 2,000 unmounted specimens in various stages of preparation. Collections from ~29 states are found in the herbarium; however, the majority of the collection (93%) is composed of specimens from Mississippi.
Contact: Heather Sullivan (


Mississippi State University

Contact: Lisa Wallace, Director (


Missouri Botanical Garden

Plants are essential to sustaining the stability and quality of human life on this planet. At the Missouri Botanical Garden, we have dedicated ourselves to helping conserve biological diversity while there is still something left to protect. Our research provides scientific information essential to decision makers, from conservation and land use to social and environmental policy. We have taken the lead in making information widely accessible via the Internet, maintaining the world's largest botanical database and the premier botanical website, TROPICOS. Garden scientists conduct the most productive and geographically widespread botanical research program in the world. A tiny sample of its herbarium records are presented here; providing more will require funding.
Contact: Jim Solomon (


Montana State University - Billings

MSUB Herbarium contains vascular plant specimens, some of which date back to late 1800s and early 1900s. The Herbarium serves as a tool for basic research in plant systematics, ecology, phytogeography, and evolution. The collections are actively used in teaching and research as a resource to provide population localities for studies of a diverse nature, ranging from biological control to rare plants. MSUB was established in 1976 when the collections from the herbaria of Eastern Montana Normal School, Eastern Montana College, Rocky Mountain College, and USDA Forest Service were consolidated. It has grown steadily to about 16,500 specimens. The collections include plants of Montana, (emphasis on eastern Montana and Beartooth Plateau,), India, Venezuela, Roberson County, Texas, Brooklyn Botanical Gardens Herbarium, W.K. Kellogg Biological Field Station and vascular plants of Wisconsin, Ohio, Utah, and many other places.
Contact: Tasneen Khaleel (
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Montana State University - Northern Herbarium

Specializing in flora of the north central and eastern plains of Montana, the Montana State University Northern Herbarium represents a new repository for plants growing in the diverse habitats associated with this geographical area. In addition to grass- and shrub lands, we house specimen vouchers from localized mountain areas that rise above the plains (e.g., Sweetgrass Hills, Bears Paw and Little Belt Mountains). Plants collected from prairie potholes and limestone outcrops, as well as those from cottonwood dominated riparian areas and gumbo bluffs associated with the Missouri River Breaks, are included in the collection. Voucher age ranges from the early 1900’s to the present and some of these represent plants collected from more well-known regions, e.g., Yellowstone, Rocky Mountain, and Glacier National Parks.
Contact: Terri Hildebrand (
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Morehead State University Herbarium

Contact: Allen Risk (
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Morris Arboretum of University of Pennsylvania

The herbarium of the Morris Arboretum of University of Pennsylvania contains mostly vascular plants of Pennsylvania, and also vouchers for the living collection at the arboretum, and some temperate, woody plants of Europe and Asia.
Contact: C. Skema (


Morton Arboretum

Northern hemisphere and cultivated woody plants; Chicago region; lichens of Illinois and Missouri (20 000 specimens).
Contact: Andrew Hipp (


Muhlenberg College

Muhlenberg College Herbarium has over 40,000 specimens focusing on the flora of Lehigh and Northampton Counties in Pennsylvania. Collections were made from the early 1900s through 1990.
Contact: Richard A. Niesenbaum (
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Murray State University Herbarium

The Murray State University Herbarium (code MUR), Murray, KY, was created through the efforts of Dr. Marian Fuller in the late 1960s. She combined a number of smaller plant collections that had accumulated over the years since the beginning of the university in 1922, in addition to adding many specimens of her own. Over 40,500 plant specimens are currently housed in the herbarium, which makes MUR the third largest collection in the Commonwealth of Kentucky. The H. Raymond Athey collection, the largest individual collection of almost 6,000 specimens, also is housed in the herbarium. The herbarium is the repository of the largest collection of the Jackson Purchase area (Mississippi Embayment) flora in the state. Approximately 56% of the specimen records have been cataloged electronically and are available on-line through this searchable database. This herbarium has been supported by many volunteers; the MSU College of Science, Engineering, and Technology; the Department of Biological sciences; the Watershed Studies Institute; and the Kentucky Academy of Science.
Contact: Dr. Dayle Saar, Director and Curator (


Museum of Northern Arizona

Walter B. McDougall Herbarium
Museum of Northern Arizona
3101 North Fort Valley Road
Flagstaff, Arizona 86001

Index Herbariorum
Contact: Kirstin Olmon Phillips (


Natural History Institute Herbarium

Contact: Lisa Floyd-Hanna (Herbarium Curator); Becky McLemore (Collections Manager) (


Navajo Nation Herbarium

Contact: Nora Talkington (
Home Page:


Nevada Department of Agriculture Herbarium

The Nevada Department of Agriculture’s (NDA) herbarium began in 1962 with a focus on native species, invasive species, and species that are host to insects of concern. The herbarium is located at the NDA’s headquarters in Sparks, Nevada and contains more than 1300 specimens. Future specimens will be added to the collection in order to document Nevada’s noxious and invasive species.
Contact: Jake Dick (
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Nevada Operations Office, Department of Energy

This small herbarium consists primarily of specimens from south-central Nevada collected on federally controlled lands focusing on the Nevada National Security Site. There are just under 8,000 specimens collected primarily from 1960-1990. Dr. Janice Beatley was the originator of the collection and several Botanists have contributed records over the past 50 years. The U.S. Department of Energy provides support for maintaining the collection to assist with environmental work at the Nevada National Security Site.
Contact: Dr. W. Kent Ostler (
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New Mexico Natural History Institute Herbarium

NMNHI was established in 1977 and is incorporated in New Mexico. The NMNHI herbarium collection consists of 3 herbarium cabinets comprising an estimated 2000-3000 specimens. The herbarium facility contains 2 microscopes and a library. Roger Peterson and the late Helen Cannon have been the primary collectors of specimens.
Contact: Roger Peterson (
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New Mexico State University Herbarium

Contact: Sara Fuentes-Soriano (


New Mexico State University Range Science

Contact: Sara Fuentes-Soriano (


New York Botanical Garden

Contact: Thiers, Barbara (


New York State Museum

The vouchers for John Torrey's Flora of the State of New York (1843) formed the nucleus of the Herbarium. Because of the cultural and economic importance of the Albany-Troy area in the l9th century, the herbariumattracted collections of other early botanists, including Lewis Caleb Beck, Chester Dewey, H. P. Sartwell, Edward Tuckerman, the student Asa Gray, P. D. Kneiskern, and others. However, the bulk of the Herbarium is the result of the staff's collections and gifts and exchanges. Notable were the contributions of the first three state botanists, C. H. Peck, H. D. House, and E. C. Ogden, and the first designated curator, S. J. Smith.
Contact: Diana Hurlbut, Collection Manager, Vascular P (

Newberry College Herbarium

Contact: Charles Horn (
Home Page:

Nicholls State University Herbarium

Contact: Jane Carlson (
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North Carolina Museum of Natural Sciences Herbarium

Contact: ()


North Carolina State University Vascular Plant Herbarium

Contact: Alexander Krings (


North Carolina Zoological Park

Contact: Allen, Nell (


Northern Illinois University Herbarium

he herbarium at NIU is an internationally recognized systematic collection, initiated in the 1960s and enlarged significantly during the 1970s to the present. Holdings presently total about 19,000 specimens of vascular plants plus an additional 8000 bryophytes. A very large portion of the bryophytes (about 6000 specimens) is on permanent loan to MO (Missouri Botanic Garden).
Special collections include a definitive collection of the genus Dahlia, which contains holotypes and isotypes plus a thoroughly documented array of hybrids between authenticated wild species. A second important collection is of Arbutus that also includes type material. The troublesome genus Agrimonia is more completely documented at DEK than at any other herbarium in the world. DEK presently maintains exchange relationships with more than 26 domestic and 6 foreign herbaria. As a consequence, coverage, while emphasizing the flora of Illinois, is worldwide.
Contact: Paul Sørensen (


Northern Kentucky University, John W. Thieret Herbarium

Contact: Maggie Whitson (


Observaciones Generales de Flora del Noroeste de México

Contact: José Jesús Sánchez Escalante (
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Ohio State University Herbarium

The Ohio State University Herbarium (OS) is a major collection of plant and fungal specimens and is a unit of the Department of Evolution, Ecology and Organismal Biology. We are part of OSU's Museum of Biological Diversity. Since its founding in 1891, the collection has grown to approximately half a million specimens and has worldwide coverage, with strengths in flora of the northeastern United States (especially Ohio) and in temperate South America. The Herbarium supports research and teaching at OSU and receives frequent use by researchers from other academic institutions, as well as by staff from governmental agencies such as the Ohio Department of Natural Resources.
Contact: John V. Freudenstein, Director (


Ohio University, Bartley Herbarium

Currently, the Bartley Herbarium consists of approximately 55,000 mounted and accessioned specimens, plus several thousand additional unmounted and unaccessioned specimens being processed. Of these, 30, 657 specimens were collected in Ohio, with the remainder being mostly from other parts of the eastern United States. Our Herbarium is the largest in Appalachian Ohio and seventh largest in the state. It is particularly rich in specimens from southern and southeastern Ohio, due to the efforts of Floyd Bartley and subsequent botanists who have been active in the region. It has the largest holding of vascular plant specimens from the unglaciated, Appalachian region of Ohio. The Bartley Herbarium is the main repository for flora projects conducted in this region, as well as the recipient of vouchers from ecological investigations and regional systematic studies of particular plant groups.
Contact: Harvey E. Ballard, Jr., Director of the Floyd Bartley Herbarium and Curator of Vascular Plants (

Old Dominion University Herbarium

Contact: Lisa Wallace, Director (
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Oregon State University

Contact: ()
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Pacific Union College Hebarium

Specialty: Vascular plants of coastal regions from San Francisco Bay to southern Oregon; Napa County, California; Klamath Mountains; Arizona; Nevada.
Date Founded: 1967.
Contact: Aimee Wyrick, Director and Curator (
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Pipe Spring National Monument

The PISP herbarium has an extensive collection of historical specimens dating from the 1930s. As of FY2013, the herbarium collection includes 559 specimens. The first collection was acquired by Leonard Heaton, the park’s first caretaker. Heaton also compiled an early (1935) checklist of the park’s flora. Very few park units have such strong baseline data. These historical specimens were recently remounted and are in excellent condition. Relatively few additional specimens were added to the PISP herbarium until 1997, when ZION personnel began exotic and native species inventory projects. Over the past decade, the collection has grown significantly in size as a result of new collections added during inventory and vegetation mapping projects sponsored by the NPS Inventory and Monitoring Program. As of 2013, 335 vascular plant taxa have been documented for the park since its establishment in 1923. The PISP herbarium currently has a voucher for 275 (82%) of these species. Of the 60 species missing from the PISP herbarium, 13 have been collected from the park but are housed in other regional herbaria (mostly at Arizona State University, University of Arizona, and University of Wyoming). Eleven species have been recently observed but no voucher made, and 36 species have been reported in various documents, but no voucher has been taken and the species have not been observed in recent years.
Contact: Brandon Sexton (


Pittsburg State University, Theodore M. Sperry Herbarium

The collections contain approximately 64,100 specimens, which document the distribution and natural variation of vascular plants and bryophytes in Kansas, adjacent states, and North America, excluding ca. 16,000 backlogged specimens. Many of its specimens are unicates. The collections also include important holdings from abroad (Dem. Rep. Congo; Peru; Myrtaceae of Madagascar and New Caledonia; Poaceae worldwide). Ca. 5800 collections of North American bryophytes are databased on the Consortium of North American Bryophytes website.
Contact: Neil Snow (


Prairie Fen Biodiversity Project

Since 2012, the Prairie Fen Biodiversity Project (PFBP) has collected baseline plant diversity data in prairie fens to investigate drivers of biodiversity in these diverse systems. Prairie fen wetlands are globally vulnerable wetlands that provide habitat for over 35 state (i.e., Michigan) and federally listed species and function at the headwaters for several major watersheds. These at risk habitats are of high conservation concern and are heavily managed at the local, state, and federal level.

The Prairie Fen Biodiversity Project began in 2012 as a part of the Master's thesis of Central Michigan University student Rachel A Hackett working with Professor Anna K Monfils. The project was continued and expanded by Clint D Pogue in 2014, and has since been a focus of the graduate students in Monfils' laboratory. The original project focused on plant diversity which has expanded to several listed species and pollinators of prairie fen wetlands.

This project has expanded into a Prairie Fen Research Collaborative ( that includes several Central Michigan University professors and studies and scientists at the Michigan Natural Features Inventory. The goal of the Prairie Fen Research Collaborative is to conduct research that addresses knowledge gaps hindering the conservation of prairie fen biodiversity and improve the efficacy of prairie fen research, monitoring, and management. By accruing knowledge and creating new tools, we help a variety of agencies and organizations working to conserve prairie fens for the benefit of unique species and people.
Contact: Anna K Monfils (


Putnam Museum and Science Center

The Putnam Museum & Science Center herbarium holds nearly 19,000 specimens. Contributions to the collection, made by approximately 450 botanists, span the years 1834 to 1989 and represent 20 countries. The herbarium is largely of North American origin (92%). Though 46 U.S. states and Washington, D.C. are represented, nearly half of the specimens are from Iowa and Illinois (48%), due to extensive collecting completed to document the flora of the Quad Cities region. Angiosperms predominate (92%), but pteridophytes (3.5%), bryophytes (2.6%), and algae (1.2%) are also present. Of the approximately 1450 genera in 314 families in the herbarium, the Asteraceae, Cyperaceae, Fabaceae, Poaceae, and Rosaceae combined make up 38% of the total.
Contact: Nick Stoynoff (


R.M. Myers Herbarium

The R.M. Myers Herbarium contains more than 75,000 specimens, of which most are from western Illinois or southeastern Iowa. We hold a major collection of moss specimens from western Illinois, as well as a set of Opuntia fragilis specimens that document most areas where it grows in the midwest.
Contact: Eric Ribbens (


Randolph College

Contact: Emily Smith (

Red Butte Garden in Salt Lake City

Red Butte Garden, situated on 100 acres at the mouth of Red Butte Canyon in Salt Lake City, is the largest living botanical collection in the intermountain west. This community-funded project is home to a collection of native, ethnobotanic, rare, endemic, and geographically relevant plant species, the State Arboretum of Utah, and over 450,000 spring-blooming bulbs including one of the most diverse collections of Narcissus sp. in the world. Red Butte is a proud proponent of native plant research, and the conservation department is host to a small, but growing assortment of herbarium specimens collected as part of a commitment to that endeavor.
Contact: Kadyn Ward (

Reinhardt University Herbarium

Contact: Aliya Davenport (
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Rhodes College Herbarium

Contact: Rachel Jabaily (
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Rob & Bessie Welder Wildlife Foundation Herbarium

Contact: Selma Glasscock ()


Robert F. Hoover Herbarium, Cal Poly State University

The Hoover Herbarium houses 85,000+ specimens of vascular plants, algae, lichens, and bryophytes. The geographic focus is San Luis Obispo County, California. The collection also includes many specimens from other areas of California, other states of the US, particularly Arizona, and some from other regions of the world, especially Mexico. Emphasis areas in the collection include Asteraceae, Lupinus, and cultivated Eucalyptus. Major collections include Robert F. Hoover (1946–1969), David J. Keil (1966–present), Rhonda Riggins (1970s–2000), Tracy Call (mostly Apiaceae—late 1940s–1960s), and Robert J. Rodin (1940s–1977). The collection is used extensively in undergraduate teaching and training.

Important Collections: Robert F. Hoover (1946–1969), David J. Keil (1966–present), Rhonda Riggins (1970s–2000), Tracy Call (mostly Apiaceae—late 1940s–1960s), and Robert J. Rodin (1940s–1977)
Contact: Jenn Yost, Director and Assistant Professor o (


Robert K. Godfrey Herbarium at The Florida State University

The collection contains >220,000 specimens that document the distribution and natural variation of plants and algae worldwide, with a special focus on the 2,400 species of plants found in N FL--one of North America's biodiversity hotspots--and the microalgae of Florida's Gulf and Atlantic coasts.
Contact: Dr. Austin R. Mast (


Rocky Mountain Biological Laboratory

Vascular Plants curated within the Rocky Mountain Biological Laboratory Herbarium. Specimens date to 1929 and are primarily from the East River and upper Gunnison basin.
Contact: C.F. Rick Williams, Curator (


Rocky Mountain Herbarium

Founded in 1893 by Aven Nelson, the Rocky Mountain Herbarium (RM) contains the largest collection of Rocky Mountain plants and fungi in existence with additional representation of the floras of other parts of the Northern Hemisphere. It ranks 17th in the nation with 825,000 specimens [with approximately 25,000 new specimens added each year] and is the largest facility of its kind between St. Louis, Missouri, and Berkeley, California
Contact: Ernie Nelson (


Rutgers University, Chrysler Herbarium

The Chrysler Herbarium (CHRB) at Rutgers University is the last internationally recognized herbarium still in existence in the state of New Jersey (USA). Over 150,000 vascular plant and algal collections, about 7,000 moss and liverwort specimens, and 2,600 lichen specimens form our collection and are arranged and catalogued systematically. The collection is worldwide in scope, with an emphasis on New Jersey and the Mid-Atlantic area, and contains specimens back to the early 1800s. The Rutgers Mycological Herbarium (RUTPP), which is housed together with CHRB, has been estimated to contain more than 40,000 fungal collections, and has a strong focus on microfungi and plant pathogens. Dr. James White is the curator of the mycological collections, and Dr. Lena Struwe is the Director of the Chrysler Herbarium.
Contact: Lena Struwe (


Sagehen Herbarium

The Sagehen Herbarium is comprised of two related collections: Flora of the Sagehen Basin (approx. 1600 specimens) and Flora of the Chickering American River Reserve (approx. 200 specimens). Both are designed to be synoptic teaching collections for their respective regions. Sagehen Basin is approximately 8000 acres, and encompasses a diverse cross section of the Sierra Nevada from the Pacific Crest (el. 8000 ft) to the eastern slope (el. 6400 ft). Habitats include yellow pine, mixed conifer, and red fir forests, as well as brushfields, scattered mountain meadows, and fens. Major collectors include E. Davidson, W. Savage, B. Trowbridge, L. Loeblich, J. Ammirati, R. Schmid, M. Fleshner, and J. Brooks.  The Chickering American River Reserve encompasses the headwaters of the North Fork American River, on the west slope of the Sierra Nevada. It includes habitats such as black oak woodlands, montane and subalpine coniferous forests, aspen groves, willow thickets, mixed riparian woodland, wet and dry subalpine meadows, montane chaparral, alpine lake margins, and fell fields. Major collectors are R. Palmer, B. Corbin, S. Chickering, E. Krimmel, and F. Felix. Flora of the Chickering American River is a new collection as of Summer 2013, with the goal of establishing voucher specimens to document this reserve's plant list. Both the Sagehen Creek and Chickering American River collections are actively being added to at a rate of 50-300 per field season.
Contact: Faerthen Felix (


Salem College

The Salem College Herbarium is the oldest herbarium in the United States. It was founded in 1772, but the oldest specimen, a Symphoricarpos collected from the Deep River [North Carolina] by C. Frederick Denke (1775-1838), is dated June, 1817. The historical collections (1817-1895) number about 1000 specimens and are mostly from the Piedmont of North Carolina. There are ca. 5000 specimens in the modern collection (1900-present), and these were collected from North Carolina by Salem College students & faculty. Please contact Dr. Dane Kuppinger, Curator, for access to the Salem College Herbarium.
Contact: Dane Kuppinger (
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San Diego State University

The San Diego State University Herbarium (SDSU) is a depository of over 20,000 pressed and mounted plant specimens used in research and teaching. The purpose of these specimens is: 1) to serve as voucher documentation for research projects; 2) to serve as resources for plant identification; and 3) to serve as exemplars in plant courses. In addition, the herbarium both receives and provides loans of plant specimens used in active systematic research. The herbarium collection specializes in land plant specimens from San Diego County, California, and Baja California, with some collections from Australia, Chile, and the south Pacific.
Contact: Michael Simpson, Curator (


San Juan College Herbarium

Specialty: Vascular flora of Four Corners area, San Juan Drainage; Fabaceae; Polygonaceae; Cactaceae; Orchidaceae; Cyperaceae.
Contact: Kenneth Heil, Director (


Santa Cruz Island Reserve Herbarium

Herbarium created from in field collections by various collectors on Santa Cruz Island, CA beginning in the 1960's. Specimens located at the Santa Cruz Island Reserve Field Station will be transported for preservation to the UCSB CCBER Museum in 2017-2018.
Contact: Lynn McLaren-Dewey (


Seney National Wildlife Refuge

This herbarium represents an integral part of the history of the Seney National Wildlife Refuge. The first specimens in the collection date back to 1940. Since then, hundreds of plants have been collected, pressed, mounted, identified, and labeled by over 20 people with an interest in the vegetation of the Refuge. In 1964, Professor Edward G. Voss, a nationally recognized systematic botanist from the University of Michigan, examined the existing plant collection and made many corrections. New specimens (from 2010 onward) were verified by Dr. Anton Reznicek (University of Michigan Herbarium).
Contact: (


Shrub Science Laboratory, Rocky Mountain Research Station

Shrubs are the dominant form of plant life on vast areas of North America, as well as on other continents. Shrub dominance is a consequence of major climatic and geologic patterns. Approximately 548,000 square miles (142 million hectares) of the western United States are characterized by shrubland dominance. Sizable additional areas classified as forests, woodlands, grasslands, or riparian corridors include an important shrub component. Despite the large size of these shrub-dominated ecosystems, they are often poorly understood and frequently abused as a natural resource. Research is needed to better understand and manage these plant communities and their associated biota.

The Provo Shrub Sciences Lab is located in Provo, Utah near the Brigham Young University campus. As part of the Grassland, Shrubland and Desert Ecosystems Program in the Rocky Mountain Research Station, scientists conduct original research and collaborate with researchers and managers from private and public universities and state, federal, and foreign agencies on aspects of shrub and shrubland biology, ecology, and management. Research focus areas are inter-related and address challenges to shrubland conservation and management under the over-arching realities of a changing world.
Contact: Stewart Sanderson (


Snow College Herbarium

Snow College is the only Utah Community College to be ranked among the top ten percent of US community colleges. Its herbarium, which has about 6,000 specimens, was founded in 1940. Most are from Sanpete County, Utah, and adjacent areas.
Contact: Luis Gordillo (

Sonoran Atlas

Sonoran Desert Plants: An Ecological Atlas

Turner R.M., J. E. Bowers, and T. L. Burgess. 2005. Sonoran Desert Plants: An Ecological Atlas. University of Arizona Press: Tucson, AZ
Contact: Nick Deyo (
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South Dakota State University (C. A. Taylor) Herbarium

The SDSU Herbarium dates back to 1881 and the foundation of South Dakota College. The herbarium was designated the C. A. Taylor Herbarium in 1994 to honor Charles Arthur Taylor, Jr. who dedicated 40 years of his life to its maintenance and growth. A significant part of the herbarium is the many collections "Charlie" Taylor brought with him from the Ithaca, NY area and elsewhere. The herbarium at SDSU has grown to >70,000 accessions due largely to more recent floristic studies focused on such areas as the Black Hills National Forest, the Fort Pierre and Grand River National Grasslands, and wetlands of the Prairie Pothole Region. We are in the early stages of specimen digitization, with >13,000 databased (none imaged) thus far.
Contact: Dr. Gary Larson (
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Southeastern Louisiana University, Glen N. Montz Herbarium

Contact: Richard Miller (
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Southern Research Station Herbarium

Contact: David Moore (


Southern Utah University

The geographic focus of Southern Utah University's Herbarium (SUU) is the southwestern Great Basin region. As a biologically diverse area that lies at the junction of four ecosystems (Central and Mohave Basins as well as Wasatch and Colorado Plateaus), the approximately 8000 current specimens mirror an array of ecological and economical changes that have occurred in the southern Basin. In addition to historical documentation, specimens housed in the SUU Herbarium serve as a teaching tool for our students. The SUU Herbarium is also the official repository for Parashant National Monument (National Park Service).
Contact: Matt Ogburn (

Southwestern Regional Forest Service Herbarium

Contact: Kathryn Kennedy (
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Southwestern Research Station

The Southwestern Research Station aspires to add to the existing diversity and strengths of the American Museum of Natural History by providing scientists and educators from the Museum and other institutions across the country and around the world the opportunity to participate in research, workshops, and classes in one of the most biologically rich environments in the United States. The Station seeks to face the challenges of the future by promoting knowledge and understanding of our ever changing world and by evolving to meet the current needs of individuals and groups that strive to conserve the world’s biodiversity – all through the benefits of an outdoor laboratory that enhances research and education.
Contact: Marilyn Loveless (


St. Ambrose University

In 1914 the herbarium of St. Ambrose University was established as an addition to the biology department by Monsignor Ulrich A. Hauber. The herbarium currently holds over 900 of Hauber’s collections that were among the first specimens added to the facility and just over half of his collections were from the Quad Cities area. Today’s herbarium holds approximately 4500 specimens and, though it includes bryophytes, pteridophytes, gymnosperms, and fungi, flowering plants comprise nearly 90% of the total. Over 96% of the St. Ambrose University herbarium hails from the United States, with the remainder having been collected in the Bahamas, Brazil, Canada, Germany, and Switzerland. Just over 3200 specimens in the St. Ambrose University herbarium were collected in Iowa and about 2300 (~50% of the total) document the flora of the Quad Cities region, the area within which the university is found.
Contact: Nick Stoynoff (
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St. Andrews University

St. Andrews University in Laurinburg, North Carolina, has approximately 9,000 vascular plant specimens. Contact Curator Tracy S. Feldman for access to the Herbarium.
Contact: Tracy S. Feldman (


Staten Island Museum

The Staten Island Museum herbarium (SIM) contains over 25,000 specimens, focused on the flora of Staten Island and the northeastern United States. It is a complete record of the flora of Staten Island, from the 1860s to the present. The core of the herbarium was donated by co-founders Arthur Hollick and Nathaniel Lord Britton, and is composed of specimens they collected during the 1870s-1880s. Specialized sub-collections include hybrid oaks (Hollick/Britton/Davis) and hybrid violets and ferns (Philip Dowell). Aside from vascular plants, the collection also contains mosses, lichens, algae, fungi and slime molds.
Contact: Audrey Malachowsky (

Stoneville Weed Science Laboratory Herbarium

Contact: Heather Sullivan (


Stover-Ebinger Herbarium (Eastern Illinois University)

The Stover-Ebinger Herbarium has about 84,000 specimens. It contains a very good representation of the flora of the midwestern United States, and about half the specimens were collected in Illinois. Students and faculty conducting ecological studies and floristic inventories use the herbarium to help identify the plants they see and collect. Students in Plant Taxonomy, Dendrology, and Wetland Plants classes use it to become familiar with species and for identification of specimens. In the Wetland Plants, General Botany, Medicinal Plants, and Plant Evolution classes, herbarium specimens are used to to make morphological comparisons among relevant plant taxa. The herbarium was started in 1899. Originally named the Stover Herbarium for Dr. Ernest L. Stover, professor of botany from 1923-1960, the Botany Dept. faculty voted in 1995 to "expand" the name to honor John E. Ebinger on the occasion of his retirement. Dr. Ebinger collected about one-third of the specimens in the collection and served as curator from 1963-1995. For information about vascular plants and bryophytes, contact Dr. Gordon C. Tucker ( Our specimens of fungi and lichens were transfered to the Illinois Natural History Survey (ILLS) in 2015.
Contact: Gordon C. Tucker, Professor & Curator (


Swaner Preserve and EcoCenter

The Swaner Preserve and EcoCenter consists of a LEED Platinum nature education center and a 1200 acre nature preserve that is protected in perpetuity. The collection currently consists of just over 500 specimen primarily collected on the preserve and in Summit County, UT.
Contact: Nell Larson (


Tall Timbers Research Station

Contact: Thomas Ostertag, Collections Manager (


Tarleton State University Herbarium

The herbarium was founded in 1921 but most of the collections are recent. Our collection primarily represents the West Cross Timbers of Texas with the earliest work being a 1920s flora for Erath County, where the herbarium is located. Since that time, there have been many additions to the flora of the West Cross Timbers of Texas. We also have many voucher specimens from several ecological investigations in the region and from a floristic project at Padre Island National Seashore in southeast Texas.
Contact: Allan Nelson (

Tennessee Technological University Herbarium

Contact: Shawn Krosnick (
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Towson University

Lichens of Maryland; eastern U.S.; New World Fabaceae, especially Neptunia, Crotalaria, and Mucuna; Euphorbiaceae; North American Asteraceae.
Contact: David Hearn (


Trinidad State Junior College

Contact: Sherman, Susan (

Troy University Herbarium

The Troy University Herbarium (TROY) is housed in the Math Science Complex (MSCX) Room 216. The collection consists of over 40,000 specimens of primarily vascular plants with a moderate collection of bryophytes and lichens. The herbarium includes plants from throughout the Southeastern United States, although those from south Alabama form the majority of the collection. The herbarium has an active role in education, research, and public service. Herbarium staff and graduate students assist in plant identifications and provide botanical information upon request. The herbarium is open to any visitor, professional or amateur, with a legitimate reason for consulting the collection. Although the herbarium is available for use most weekdays, calling in advance of visits is recommended. In addition to the collection of plant specimens, the herbarium houses a small library, emphasizing floras, systematic monographs, and nomenclatural references. All of the Alabama specimens deposted in the TROY Herbarium can be can be viewed at the Alabama Plant Atlas Website.
Contact: Michael Woods (

Tulane Herbarium

Contact: Jennifer S. Kluse, Collections Manager (


U.C. Davis Herbarium

University of California, Davis herbarium collections are worldwide, with emphasis on California, North America, and neotropics (especially Ecuador and Baja California); Quercus, Fagaceae, and Arctostaphylos, Ericaceae of New World; Euphorbiaceae; Poaceae; Clarkia (Onagraceae); Lycianthes and Lycopersicon (Solanaceae); Stephanomeria and tarweed genera (Asteraceae); Navarretia (Polemoniaceae); Allium (Alliaceae); Trifolium (Fabaceae);Prunus (Rosaceae); Central Valley of California vernal pool species; weedy and poisonous species of California and Mediterranean-climate regions; range plants of California; alpine flora of western North America. Size of collection: 320,000 specimens, 50% from California.
Contact: Ellen Dean, Director; Tom Starbuck, Data (


UCSC Herbarium, Kenneth S. Norris Center for Natural History, University of California, Santa Cruz

The UCSC Herbarium houses approximately 10,000 vascular plants, algae, lichens, and bryophytes. The collection focuses primarily on specimens from within Santa Cruz County and the University of California Reserves but also contains collections from the rest of California and from other states and countries. The collection archives research and publication voucher specimens and is also a student education resource. Notable collections include those of R. Morgan (1969-present) and David Styer (Fort Ord National Monument, 2006-present).
Contact: Chris Lay, Administrative Director (


Université de Montréal Biodiversity Centre

The Institut de recherche en biologie végétale and its Biodiversity Centre are located within the Montreal Botanical Garden, one of the largest botanical gardens in the world. Product of a unique partnership between the Université de Montréal and the City of Montreal (Espace pour la vie Montréal), the IRBV is widely recognized as a centre of excellence whose mission is research and teaching of plant biology. Building upon this rewarding relationship, the Biodiversity Centre also strives for the highest research and educational standards, while raising public awareness of the importance of preserving and better understanding biodiversity.
Contact: Luc Brouillet, Curator (

University of Alabama

Contact: Steve Ginzbarg (


University of Alaska Museum

The Herbarium (ALA) at the University of Alaska Museum is the major regional herbarium in Alaska and part of a network of similar collections with an interest in the origin and evolution of the circumpolar flora. ALA contains more than 260,000 specimens of vascular and non-vascular plants. Data for the Vascular Plant and Cryptogam collections are managed separately in Arctos. Much of our understanding of Ice Age Beringia is based on botanical specimens, the largest collection of which is housed at ALA. Our recent acquisition from Iowa State University of the J. P. Anderson Collection (32,000 specimens on permanent loan) forms a significant part of this story. This collection of arctic and boreal plants, which contains 67 nomenclatural type specimens, formed the basis for much of Anderson's seminal work, The Flora of Alaska. The botanical collection also includes plants from other states, Canada, Greenland, Fennoscandia, Japan, and Russia and provides a basis for teaching and research. Our botanical collection can be viewed and searched through the Arctos database and includes high resolution images of 163,000 herbarium sheets, online representation of 190,000 holdings, and inclusion of all holdings in an object-tracking system (barcode labeling).
Contact: Steffi Ickert-Bond, herbarium curator (


University of Arizona Herbarium

Contact: ARIZ Herbarium (

University of Arkansas at Monticello

Contact: Karen Fawley (
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University of Arkansas Herbarium

Contact: Dr. Johnnie L. Gentry Jr. (


University of California, Riverside Plant Herbarium

Contact: Andrew Sanders (


University of Central Arkansas Herbarium

Contact: Rick Noyes (


University of Central Florida Herbarium

Contact: Elizabeth Harris (
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University of Cincinnati, Margaret H. Fulford Herbarium

The herbarium at the University of Cincinnati was founded by Margaret Fulford in 1920s and has grown over the years through the work of prolific collectors and through acquisition of several large and important collections. Today, the herbarium houses around 125,000 specimens of vascular plants, bryophytes, lichens, fungi, and algae, making it the third largest herbarium in Ohio. In addition to the large collection of regional and North American material, it also contains extensive collections from Europe, South America, the Caribbean Basin, Samoa, and China. Particular strengths of the herbarium are North American Sphagnum, South American and Caribbean Hepatics, North American Cladonia, and Trilliaceae.
Contact: Eric Tepe, Assistant Professor (


University of Colorado Museum of Natural History Herbarium Vascular Plant Collection

This database represents a snapshot of our primary database housed at and may not be as up to date as our primary database.

Collection strengths: Colorado, Southern Rocky Mountains and Western North American vascular plants and cryptogams, worldwide arctic and alpine, Appalachia, Galapagos Lichens, Australia, New Guinea, Altai, Mexico and the Seville Flowers Bryophyte Collection.

Digitization: Digitization efforts have been focused on North American vascular plants, lichens and bryophytes with an emphasis on Colorado specimens. All Colorado vascular and cryptogam specimens have been imaged and entered into the database. Images for North American vascular plants are captured for 18 families under the Tri-Trophic TCN. North American lichen packets have been imaged and transcribed All North American bryophyte packets have been imaged and all Colorado specimens have been transcribed and are available at 140,000 vascular plant specimens and 55,000 bryophytes and 47,000 lichens from outside of North America have not been digitized.
Contact: J Ryan Allen (


University of Florida Herbarium

Contact: Kent D. Perkins, Collection Manager (


University of Georgia Herbarium

Contact: Wendy B. Zomlefer (


University of Illinois Herbarium

Specialty: Illinois, midwestern U.S., Apiaceae, Asteraceae, Fabaceae: Mimosoideas, fossils of Pennsylvanian age coal balls, fungi (especially Meliolales: Ascomycetes and resupinate Basidiomycetes), 19th and early 20th century exsiccatae.

Date Founded: 1869.
Contact: David S. Seigler (
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University of Louisiana at Monroe Herbarium

Contact: Thomas Sasek (

University of Louisiana Lafayette Herbarium

Contact: William Welsh (
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University of Mary Washington Herbarium

Contact: April Wynn / Jill Spear ( /


University of Maryland, Norton-Brown Herbarium

Mainly vascular plants of Maryland and Chesapeake Bay area, mid-Atlantic states, and western U.S.; Guam; Malvaceae; Marcgraviaceae; Polygonaceae
Contact: Maile C. Neel (


University of Memphis Herbarium

The original Raymond Athey Herbarium collection at the University of Memphis was orphaned in the 1980s. Approximately 60,000(?) specimens from the collection were transferred to TENN and EKY in the early 2000s, but many of the accessions were left behind. Beginning in 2014, the new University of Memphis Herbarium was built on the roughly 18,000 specimens that remained. The present collection consists of vascular plants from the Southeastern US, predominantly those of Kentucky (46%) and Tennessee (23%).

Current research and collection emphasis is on the plants of West Tennessee.

Contact: Darrell Brandon (


University of Michigan Herbarium

Specialty: Worldwide, especially temperate North America and the Great Lakes region. Specific strengths include marine algae of eastern North America, West Indies, Alaska, and Pacific Islands; bryophytes of tropical America; Agaricaceae and Hymenogastraceae of western North America; vascular plants of Mexico, Iran, Himalayas, southwestern Pacific Region, and southeastern Asia; Cyperaceae, Malpighiaceae, and Myrtaceae of the New World.
Date Founded: 1837.
Contact: Richard Rabeler, Collections Manager (


University of Mississippi, Thomas M. Pullen Herbarium

The Pullen Herbarium (MISS) collection consists of over 62,000 vascular plant specimens, as well as non vascular plants, slime molds and woods. With funding from the National Science Foundation , the collection is now housed in new cabinets on a compactor system and the specimen data has been entered into a searchable database.
Contact: Lucile McCook, Curator (


University of Nebraska at Kearney Herbarium

The University of Nebraska at Kearney Herbarium (NEBK) contains ca. 35,000 specimens of vascular plants and approximately 4000 bryophytes and lichens. The collection is mostly regional and representative of the mixed-grass prairies of the Central Great Plains. The organization of NEBK can largely be attributed to the late Ole A. Kolstad who was curator from 1965-1992. Some significant collections are those by H.A. Hapeman (late 1800’s-early 1900’s), W.E. Bruner (1930’s), O.A. Kolstad (1960’s-1970’s), and G.E. Larson (1970’s to date). Grasses (Poaceae), sedges (Cyperaceae), and rushes (Juncaceae) are well represented.
Contact: Steve Rothenberger, Curator (
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University of Nevada Herbarium

Contact: Arnold Tiehm, Curator (


University of New Mexico Herbarium

Contact: Timothy K. Lowrey (


University of North Carolina Chapel Hill Herbarium

The University of North Carolina Chapel Hill Herbarium (NCU) is a Department of the North Carolina Botanical Garden of the University of North Carolina at Chapel Hill. The vascular plant collection is world-wide in scope, and focuses on the native flora of the Southeastern United States. Approximately 450,000 of our ca. 600,000 specimens will be imaged & databased for THE KEY TO THE CABINETS: BUILDING & SUSTAINING A RESEARCH DATABASE FOR A GLOBAL BIODIVERSITY HOTSPOT. NCU also curates plant fossils (esp. Devonian and collections of Patricia Gensel), fungi (esp. collections of W.C. Coker, J.N. Couch, A. B. Seymour), lichens (esp. collections of Gary Perlmutter), bryophytes, and algae (esp. red marine algae of temperate zones and collections of Max Hommersand & Paul Gabrielson). NCU is open to the public & welcomes researchers; contact Curator to reserve on-campus parking permit.
Contact: Carol Ann McCormick (


University of North Carolina, Asheville

We have a collection of about 5000 specimens that are primarily from the southern Appalachians. These include about 2500 specimens from Polk County and vicinity that were collected by O. M. Freeman in the 1950's, and about 1500 specimens from the Bent Creek Herbarium of the U.S. Forest Service.
Contact: David Clarke (
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University of Northern Iowa, Grant Herbarium

ISTC contains ca. 47200 accessioned specimens, these mainly from Iowa but with substantial holdings from the American West, especially Arizona, Colorado, New Mexico, and Utah. Many duplicates of the collections of Martin Grant from Iran are also present.
Contact: Steve L. O'Kane, Jr. (
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University of Notre Dame, Greene/Nieuwland Herbarium

The Greene/Nieuwland Herbarium is used for teaching and research in the study of botany, ecology, evolution, biodiversity and conservation, regional and global environmental change, genetics, natural products chemistry, archeology, and anthropology, to name a few. An official repository for specimens collected by state and federally funded surveys, the Museum of Biodiversity allows more undergraduate and graduate students to experience a vast array of naturally occurring substances--some of which may hold the key to new discoveries in drug treatments for diseases such as cancer.
Contact: Barbara Hellenthal, Curator (

University of Richmond Herbarium

Contact: John Hayden (

University of South Carolina Salkehatchie Herbarium

Contact: Eran Kilpatrick (
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University of South Carolina Upstate Herbarium

The herbarium at the University of South Carolina Upstate (formerly University of South Carolina Spartanburg) houses a collection of bryophytes and vascular plants with a focus on the Piedmont region of South Carolina. The collection was begun in the 1970s and most specimen were collected by or under the supervision of Dr. Gillian Newberry.
Contact: Benjamin Montgomery (


University of South Carolina, A. C. Moore Herbarium

The A. C. Moore Herbarium is an important part of the Department of Biological Sciences at the University of South Carolina (Columbia Campus). Founded in 1907 by Dr. Andrew Charles Moore, the original collection of dried plant specimens is now part of an ever growing collection. Total holdings are just over 120,000 specimens, making the A. C. Moore Herbarium the largest in the state of South Carolina. Researchers and visitors will find a diverse collection of vascular and nonvascular plant material primarily from the Southeastern United States and more specifically from South Carolina. Now over 100 years old, the A. C. Moore Herbarium continues to be an indispensable resource for botanical knowledge.
Contact: Dr. John B. Nelson (


University of Southern Mississippi Herbarium

Founded in 1964, the University of Southern Mississippi Herbarium specializes in vascular plants of the southeastern U.S., aquatic and wetland plants as well as myxomycetes of Mississippi.
Contact: Mac Alford (


University of Tennessee

Contact: B. Wofford (

University of Tennessee Martin Herbarium

Contact: Lisa Krueger (
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University of Tennessee, Chattanooga

Contact: Joey Shaw (
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University of Texas at El Paso Biodiversity Collections Herbarium

The Herbarium contains well over 85,000 catalogued plant specimens. Overall geographic content of the Herbarium is approximately as follows: Texas, 24%; New Mexico, 22%; other USA, 32%; Mexico, 7%; other world, 15%. Herbarium materials at UTEP that are of special interest include an extensive representation of the floras of the desert mountain ranges of southern New Mexico and western Texas.
Contact: Teresa Mayfield ( or Richard Worthington ( ()


University of Texas Herbarium

The University of Texas Herbarium (TEX) is part of the Plant Resources Center, which houses the combined herbaria of TEX and the Lundell Herbarium (LL). The combined PRC collections include over one million specimens from all parts of the world and represent the fifth largest university herbarium in the United States (with the fourth largest university collection of vascular plants). The two herbaria (TEX and LL) are completely integrated and interfiled, although each sheet is marked as to its herbarium and should be cited as such. The University of Texas Herbarium itself, with close to 700,000 specimens, dates to the 1890s and is especially strong in Texas and Mexican specimens. It has been associated with a plant systematics graduate program that has been one of the strongest in the U.S. since the 1960s, and the research interests of faculty, staff and graduate students have led to very strong representation of Asteraceae, Fabaceae, and Rhamnaceae, among other families, as well as the Chihuahuan Desert region (Mexico and the U.S.) and the mountains and plains of northeastern Mexico. All new specimens received into the Plant Resources Center are now accessioned into TEX.
Contact: Tom Wendt (

University of the South - Sewanee Herbarium

Contact: Jon Evans (
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University of Vermont, Pringle Herbarium, vascular plants excluding those from New England

The Pringle Herbarium (VT) contains 300,000 specimens, including vascular plants, bryophytes, lichens, algae and fungi. Of these, this portal will contain about 180,000 vascular plant specimens, including all vascular plant specimens except for those from New England. Other digitization projects cover type specimens, vascular plant specimens from New England, North American bryophytes and lichens, macroalgae and macrofungi. These images and data are available through various other portals. The herbarium does not maintain its own online database.
Contact: Dorothy J. Allard (


University of West Florida

The Michael I. Cousens Herbarium of the University of West Florida (UWFP) was established 30 October 1974 (as the Herbarium of the University of West Florida) for the purpose of documenting the Flora of the Florida panhandle and neighboring states. Currently, its holdings include approximately 22,000 vascular plant specimens of 3500 species and smaller collections of bryophytes and macroalgae.

Important collectors represented are R. K. Godfrey, L. C. Anderson, J. B. Nelson, B. F. Hansen, J. R. Abbott, J. R. Burkhalter, and O. Degener. The core of the permanent exsiccatae collection consists of approximately 10,500 specimens from over 600 locations in Escambia County, FL, representing 1,600 species, making it one of the most biodiverse county floras in the United States.

Contact: Philip Darby (


University of West Georgia Herbarium

Contact: David Morgan (
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University of Wisconsin-LaCrosse

Specialty: Western Wisconsin; upper Mississippi River floodplain. Date Founded: 1968.
Contact: D. Gerber, Curator (
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University of Wisconsin-Madison, Wisconsin State Herbarium

The Wisconsin State Herbarium (WIS), formerly known as the University of Wisconsin-Madison Herbarium, was founded in 1849, and is a scientific collection of pressed, dried, labeled, and classified plants and fungi. It also preserves notes, illustrations, and other material about plants, and it maintains its own valuable Herbarium Library. The collection of more than 1.2 million specimens is of regional, national, and international importance. Approximately one-fourth of its vascular plant specimens are from Wisconsin, all of which have been databased and are searchable online. In addition, most of the world's floras are well represented, and the holdings from certain areas such as the Upper Midwest, eastern North America, western Mexico, and the Arctic (primarily lichens) are widely recognized as resources of global significance. The herbarium occupies two floors of the east wing of historic Birge Hall at the top of Bascom Hill on the UW-Madison campus. In addition to its specimen holdings, visitors to WIS have access to high-quality microscopes, an extensive library of books, reprints and maps, computer workstations, and internet connections for personal computers. WIS serves as the state of Wisconsin's official repository of plant specimen vouchers, and is actively engaged in educating students and sharing our passion for plants with the public. The faculty, staff, and students associated with the herbarium are engaged in a variety of local, regional, national, and international efforts to document, showcase, and protect plant diversity.
Contact: Kenneth M. Cameron (


University of Wisconsin-Milwaukee

The University of Wisconsin-Milwaukee Herbarium (UWM) is one of the largest in the state, with a total of approximately 62,000 accessioned specimens with a further 4,000 specimens unaccessioned at UWM or housed at the UWM Field Station. The majority of the dried plant specimens are from Wisconsin, especially the southeastern portion of the state. Also included is an extensive collection of the flora found at the University of Wisconsin-Milwaukee Field Station, a six square mile area of wetlands and mixed deciduous forests. UWM also has collections from other areas of the country and the world. These include the American Southwest (especially the Sonoran Desert), Australia, Northern Europe, and Alaska. The collection is growing, especially in the Ranunculaceae (buttercup family) and related families (Ranunculales).
Contact: Sara Hoot, Director (


University of Wisconsin-Stevens Point, Robert W. Freckmann Herbarium

Dr. Robert Freckmann, Professor Emeritus of Biology, taught vascular plant taxonomy and agrostology at UW-Stevens Point for 32 years. Starting with one cabinet of about 1,000 plant specimens in 1969, he (and Dr. Frank W. Bowers) built this herbarium into the 3rd largest in Wisconsin, with over 200,000 specimens. It was named in his honor upon his retirement.
Contact: Stephanie Lyon (


US Forest Service Southwestern Region

Contact: Elizabeth Makings (



USU-Eastern, formerly known as the College of Eastern Utah, became a branch campus of Utah State University in 2010. Its herbarium's emphasis is on the flora of Carbon and Emery Counties, Utah. USU-Eastern offers associate degrees in arts, science, and applied science and facilitates transfers to the state’s four year institutions.
Contact: Mike King (
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Utah State University Uintah Basin

The herbarium of the Uintah Basin campus of Utah State University (USUUB) contains about 7500 specimens, all of them vascular plants and most of them collected by Dr. Sherel Goodrich, a botanist with the Ashley District of the US Forest Service who retired in December, 2011. Thanks to the efforts of Dr. Lorin Squires and support by Dr. Goodrich, the Forest Service agreed to transfer the specimens collected by Goodrich to the Uintah Basin campus where they will be available to help those in the area become familiar with and interested in studying the region’s distinctive flora.
Contact: Shana Geffeney (
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Utah Valley University Herbarium

The Utah Valley University Herbarium (UVSC) was established in 1987 as a research and teaching facility by Dr. James G. Harris. As a result of his research, the herbarium contains a diverse collection of specimens from Greenland, Canada, and high elevation mountain ranges in the Intermountain Region. In addition, UVSC has one of the most comprehensive collections of the genus Braya (Brassicaceae) outside of Canada and the genus Draba (Brassicaceae) in Utah. The herbarium has extensive Utah collections from the deserts of the San Rafael Swell, high elevation mountain peaks in along the Wasatch Front (i.e. Mt. Timpanogos, Mt. Nebo) and the Deep Creek Range. Recently, vouchers from Dr. Renee Van Buren's book, Woody Plant of Utah, have been processed and integrated into the herbarium. Currently the herbarium houses over 17,000 accessioned herbarium sheets, with an average of 1,500 specimens being added to the collection each year. The current curator, Dr. Jason A. Alexander, is a specialist in desert floras, specifically the Mojave Desert and the Great Basin, and the genus Astragalus (Fabaceae).
Contact: Jason Alexander (


Valdosta State University Herbarium

The Valdosta State University Herbarium (VSC) provides a repository for the preservation of voucher specimens that document the flora of the Coastal Plain region of Georgia and specimens from a broader geographical area that might be useful in the study of the flora of this region and that enable specialized research on particular groups of plants carried out by faculty and students in residence at Valdosta State University and by taxonomic specialists at other institutions. VSC also provides specimens for use in teaching, and its staff responds to requests from the general public, natural resource managers, agricultural scientists, and others by providing information about plants and service determinations of unknown plants and, where appropriate, preserving vouchers relating to such.
Contact: Richard Carter, Curator (

Vanderbilt University Herbarium

Contact: Jason Best / Tiana Rehman ( /
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Virginia Commonwealth University Herbarium

Contact: Wenhang Zheng (
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Virginia Polytechnic Institute and State University, Massey Herbarium

The Massey Herbarium (VPI) at Virginia Tech is an active and growing collection that seeks to represent the floristic diversity of the central Appalachian and Mid-Atlantic regions. Building from a small teaching collection, the herbarium was established as a state repository in 1927. As of 2015, accessioned vascular plant specimens numbered 108,000. It is estimated that about 65% are from Virginia, the balance from all parts of North American, predominantly. Groups particularly well represented are ferns (especially Isoetes), Poaceae, Cyperaceae (especially Carex), and Asteraceae (Eupatorium, Packera, Solidago).
Contact: Thomas Wieboldt (


Virginia State University Herbarium

A small collection of plants focused on southside Virginia.
Contact: Sarah Melissa Witiak (


Wake Forest University

Contact: Kathleen Kron, Director (


Wartburg College

The Wartburg College herbarium (established in 1930) includes specimens from nearly 560 genera in 145 families. Just over 82% of the entire herbarium was collected in Iowa and nearly 70% of the Iowan specimens were collected in Bremer county (home to Wartburg College). Together the Asteraceae, Fabaceae, Poaceae, and Rosaceae comprise just over one-fourth of the entire collection. The collections of Craig C. Freeman, Fred H. Hubbard, Steve A. Main, and J.A. Woltz comprise nearly 32% of the entire herbarium.
Contact: Nick Stoynoff (


Washburn University

WASH represents a unique collection of Great Plains flora, mostly collected in pre-development period from 1861-1920. Specialty: Great Plains, especially Kansas. Date Founded: 1878.
Contact: Jason Emry (
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West Virginia University Herbarium

Contact: Donna Ford-Werntz, Curator (


West Virginia Wesleyan College, George B. Rossbach Herbarium

The George B. Rossbach Herbarium, established ca. 1950, is housed in the Department of Biology, Christopher Hall of Science of West Virginia Wesleyan College. The physical collection consists of over 25,000 specimens, the lifework of Dr. George Bowyer Rossbach (1910-2002). Dr. Rossbach collected primarily from West Virginia and Maine but also from elsewhere in the northeastern and southeastern United States, the western United States, Canada, Mexico, Costa Rica, and the Galapagos Islands and, as a teenager, in Massachusetts and Maine. Also present are orchid vouchers, some specimens from the central north coast of Jamaica, and other collections by Dr. Katharine B. Gregg, along with various student collections, primarily from West Virginia. In addition, there are numerous specimens from elsewhere in United States obtained through trading with other US herbaria and as gifts from Southern Appalachian Botanical Club. Dr. George B. Rossbach taught biology at West Virginia Wesleyan College from 1949-1976. From 1960 through his retirement in 1976, Dr. Rossbach was the Curator of the Herbarium. After his death, the herbarium was named the George B. Rossbach Herbarium in his honor. It is listed in Index Herbariorum (code WVW) and in the BioDiversity Collections Index. Dr. Katharine Gregg, the current curator, is now digitizing, imaging, and sharing this collection through a grant from the West Virginia Higher Education Policy Commission Division of Science and Research. As the specimens are databased and imaged they are bing made available through “Pages in Time” from the Annie Merner Pfeiffer Library, SERNEC, andiDigBio. Databasing uses software shared by the herbarium staff of Eastern Kentucky University. The virtual herbarium uses CONTENTdm, a digital content management software system, supported by OCLC (the Online Computer Library Center), Dublin, OH.
Contact: Dr. Katharine B. Gregg (


Western Carolina University Herbarium

Contact: Dr. Katherine Mathews, Director and Curator (
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Western Michigan University

Specialty: Southwestern Michigan, especially Kalamazoo County; some worldwide. Date Founded: 1917.
Contact: Todd Barkman (
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Western State Colorado University

Western slope of Colorado Rocky Mountains, including bryophytes and lichens.
Contact: Robin Bingham, Curator (
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William Jewell College Herbarium

The herbarium was founded in 1877. It contains approximately 15,000 specimens and specializes in the plants of Missouri.
Contact: Jennifer Schafer (
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Winthrop University Herbarium

Contact: Kunsiri Grubbs (
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Zion, Bryce, and Cedar Breaks Herbaria

Zion National Park manages a herbarium of over 3500 herbarium specimens. Zion also manages the herbaria from Cedar Breaks National Monument, over 900 specimens, and Bryce Canon National Monument, over 1800 specimens. These specimens provide baseline information about the natural environment of the three parks. These collections display the remarkable diversity at the convergence of three ecological provinces: the Colorado Plateau, the Great Basin, and the Mojave Desert. Zion’s collection represents over 95% of the confirmed 982 plant taxa in the park. The earliest specimens in the herbaria were collected in the 1920s with additions to the collection continuing today. Most of the specimens were collected from 1950s to 1980s.
Contact: Miriam Watson (