General Research Observations
Occurrence ID (GUID): 9e180132-be8d-4f7a-9832-63cb7eb38a0c
Taxon: Opuntia macrorhiza Engelm.
Family: Cactaceae
Collector: Frates, Tony   624   
Date: 2014-11-11
Additional Collectors: Dorde Woodruff and Randy Blackburn
Locality: United States, Utah, Salt Lake, Moyle Park subdivision, 0.10 miles east of Old Orchard Lane at roughly 6100 South 2700 East in Holladay, Utah
40.640398  -111.815483 +-10m.  WGS84
Elevation: 1380 meters (4526ft)
Habitat: Enclosed dry opening between remnant stands of arborescent Gambel's oak, habitat largely becoming overtaken by invasives, the area surrounded by large private residences and estates. Plants with mostly a southern exposure (but some growing in the shade or within other low plants), growing primarily in the northern portion of the opening along the edge of the oaks.
Associated Species: Natives: Berberis repens, Ribes aureum, Elymus glaucus, Rhus trilobata, Ambrosia psilostachya, Achillea millefolium var. lanulosa, Erigeron divergens, Solidago velutina subsp. sparsiflora, Artemisia ludoviciana, Opuntia fragilis, Sporobolus cryptandrus, Helianthus annuus, Festuca saximontana var. saximontana. Non-natives: Linaria dalmatica, Rosa canina, Salix x fragilis, Bromus tectorum, Portulaca oleracea, and Verbascum thapsus.
Description: Obovate cladodes 14cm+ long and up 8.5 cm at widest point, lacking spines lower 1/3rd, pads not easily detached, areoles mostly 2 cm apart, lateral central spines declined, erect to spreading distally, not barbed. Receptacles/fruits narrow, elongated, constricted at base, typically at least 4 to 5 cm long, mostly spineless with rarely very short to short spines. Fruits growing solely on distal end of pad, from to 1 to 6+ per pad.
Reproductive Condition: Fruit
Notes: A small number of Cactus bugs (Chelinidea sp.) observed on fruits and pads during a prior visit.
Specimen Images
Author: Tony Frates
Author: Tony Frates
Author: Tony Frates
Author: Tony Frates
Author: Tony Frates
Author: Tony Frates
Record ID: 9e180132-be8d-4f7a-9832-63cb7eb38a0c
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