Pyrrocoma uniflora (Hook.) Greene var. uniflora
Annotated by Gregory K. Brown, 2002. Remarks: Rocky Mountain Herbarium (RM) University of Wyoming

Idaho: Camas County: Camas Country: ; Centennial Marsh, Camas Prairie, ca. 10 air-km SSW of Corral. In seasonally moist to saturated muddy open alkaline flats 10 meters due E of section road junction with Centennial Marsh old pumphouse dead-end road leading into section 11, and continuing N,E, and S to edges of croplands. Elev. 1544 m.
T02S R12E S12 NW1/4.
In seasonally moist to saturated muddy open alkaline flats 10 meters due E of section road junction with Centennial Marsh old pumphouse dead-end road leading into section 11, and continuing N,E, and S to edges of croplands. Several hundred plants, with Sphaeromeria potentilloides, rumex, Distichlis, Beckmannia, Chenopodium, other grasses and weeds. Full sun. Haplopappus insecticruris on immediate W side of section road near canal and in other nearby areas, but not persistent at this site. Same site as Popovich 6216,7747. Compare range of morphologies of plants A through P; A most feeble, P most stout. ¶Slope: 0%.¶Aspect: -- Ownership: private. ¶Soil: pH-8.5, lime-high, EC-1.2; texture-SCL; precipitate on surface; OM-2.1%;N03N/P/K pmm-7/9/614. Rays bright yellow, conspicuous, achenes hairy. Phenology: Flowers.

S. Popovich 7776D, Jun 28, 1995
CIC-SHO, Accession: 485