Camissonia pterosperma (S. Watson) P.H. Raven
[= Chylismiella pterosperma]

Idaho: Butte County: [locality and coordinates withheld; status in Idaho: S2 (Imperiled; IDNHP)],
Artemisia arbuscula arbuscula community. SW facing slope, 50%. Loose, gravelly soil with shallow silt. On terraces between sagebrush with little vegetative cover. Limestone substrate. Associated with Elytrigia spicata, Phlox hoodii, Sitanion hystrix, Oryzopsis hymenoides, Mentzelia albicaulis, Castilleja angustifolia, Antennaria dimorpha, Atriplex confertifolia. Common. Corolla pink. Annual. Phenology: Flowers.

Robert Moseley 285, Jun 6, 1984
ID, Accession: 81689, Barcode: ID084047