Astragalus atratus S. Watson var. owyheensis (A. Nelson & J.F. Macbr.) M.E. Jones
Annotated by Heather Zimba, 19 Nov 2020. Sources: Flora of PNW Revised.

Idaho: Owyhee County: Air distance 31.34 km ESE from Riddle 1) Head SE on Roland Rd. for 50.2km. 2) Turn right/go west on no-named 2-track road into pasture. 3) Travel for 3km on 2-track road. 4) Keep right/north at split and continue for 1.56km. 5) Park on east/right side road. Walk 600m radius. Elev. 1539 m.
42.10962° N, 115.74418° W; UTM Zone 11, 603826E, 4662710N
Datum: WGS 84.
Rolling hills with mountains to the south and canyons to the north, overstory is low sage, Wyoming sage, basin big sage, and green and rubber rabbitbrush, dominate grasses are Idaho fescue, bluebunch wheatgrass, Sandberg bluegrass, and squirreltail; occassional western wheat; cheat grass present but not over taking, soil is rocky, silty, dry. White irregular flowers; compound, odd pinnate, smooth green leaves; grows across the ground; leaves are fairly linear and have space in between, common.

Nachman 35-18, May 9, 2018
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