Colorado Mesa University, Walter A. Kelley Herbarium
Catalog #: MESA05105
Occurrence ID (GUID): 968d937c-8d94-4db0-9130-4cd566199bf3
Secondary Catalog #: Mesa 1385
Taxon: Opuntia rhodantha K. Schum.
Collector: W.A. Kelley   80-86   
Date: 1980-06-12
Locality: United States, Utah, Grand, east of Moab, Castle Valley
38.639428  -109.409006 +-5080m.  WGS84
Georeference Remarks: Georeferenced to Castle Valley, NE of Moab with uncertainty radius extending to nearby Highway 128.
Elevation: 1737 meters Verbatim Elevation: 5700'
Habitat: desert grassland
Substrate: light gray gravel soil
Description: Perennial herb with yellow-orange flowers
Specimen Images
Rights Holder: Colorado Mesa University
Record ID: 968d937c-8d94-4db0-9130-4cd566199bf3
For additional information on this specimen, please contact: Stephen Stern (

tonyfrates posted 2019-01-05 10:35:53
This is probably Opuntia phaeacantha or related introgressed plant; the specimen and description however are inadequate to make a positive determination. While too narrow, the naked receptacles would be an indication away from hystricina and closer to phaeacantha or an introgressed plant involving that species (which is abundant in the area). Just having a few brown spines (which phaeacantha also has) doesn't make it hystricina.

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