Astragalus convallarius Greene
Annotated by Charles F. Williams, 28 May 2012. Sources: FPNW/USDA-NRCS Plants Database.

Idaho: Bannock County: Pocatello. Slate Mountain Trail, Caribou-Targhee National Forest. Ridge of Slate Mountain, from E-W. Start on hill above Caribou/Bighorn Rds. and follow ridge to saddle where Dry Creek/Gibson Jack trail crosses and joins Slate Mtn. bike trail. Elev. 5800-6200 ft.
42.7688° N, 112.4348° W; T7S R34E S25 SE 1/4
Datum: WGS84. Uncertainty: 1000 meters. Coordinate Source: GeoLocate. estimate
Dry, rocky ridge with few Junipers and woody shrubs. Plant growing on steep, grassy slope near base of hillside (above water tanks at top of Bighorn Drive). Many plants in bloom along ridge, including: Balsamorhiza sagittata (just finishing), Balsamorhiza hookeri (full bloom), Wyethia amplexicaulis (just starting), and Astragalus purshii (starting to fruit). Also in bloom - Castilleja chromosa, Penstemon humilus, Antennaria, Agoseris, and Eriogonum. Stems, stiff, erect, ~30 cm, appearing ~leafless. Leaves sparse, very narrow, unjointed, crucifom. Leaflets involute, with short, wide, basifixed hairs. Flowers cream with purple veins. Full bloom. Uncommon, only one plant seen.

Charles F. Williams 601, May 28, 2012
IDS, Accession: 2012.011, Barcode: IDS0042461