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Photo by Blake Wellard, Ben Gibbons, Matt Munson; Blake Wellard, Ben Gibbons, Matt Munson; Blake Wellard, Ben Gibbons, Matt Munson
Cottam's Cinquefoil
Potentilla cottamii
NatureServe conservation status
Global (G-rank): G2
State (S-rank): S2
External links
Phenology
Flowers late June to early August.
Species range
Holmgren (1987) reported P. cottamii as "common" at its type locality near the summit of Pilot Peak, Elko Co., Nevada, elev. 10,400 feet. Holmgren (1987) and Franklin (1994) also provided a good discussion of the questionable record from the Utah portion of the Pilot Range (based on Cottam 4538, BRY). Acc. Franklin (1994), the species is known in the Raft River Mtns. (Box Elder Co.) from three small occurrences over an elevation range from 8700 to 9740 feet, on outcrops of Precambrian rock (Upper Narrows Schist and Elba Quartzite). Dr. Noel Holmgren (NY) has confirmed the identification of two 1996 collections from the Deep Creek Mtns., Juab Co. (Ibapah Azimuth peak, elev. 11,900 ft.; Stone 1927, NY) and the Stansbury Mtns., Tooele Co. (Franklin 8140, NY). Dr. Robert Holland (1998, pers. comm.) did not find any new locations for P. cottamii during a 1996 survey in the mtns. of northeastern Nevada.
