Cymopterus douglassii R.L. Hartm. & Constance
Annotated by Ronald L. Hartman, 1985.

Idaho: Custer County: [locality and coordinates withheld; status in Idaho: S3 (Rare; IDNHP)],
Dry, exposed, limestone ridge just N of Horseheaven Pass. Common with Draba oligosperma, D. Densifolia, Potential, Phlox muscoides, Trisetum spicatum, Poa sandbergii, and some Agropyron spicatum. Flowers yellow, fading pale yellow (re: D. Henderson 4464 15 Jun 78). Nearly all plants in fruit at this time. Fruit with thickened ridges that are not corky. Fresh plants from this collection sent to Lincoln Constance (UC). Phenology: Flowers and Fruits.

D. Henderson 4953, Aug 4, 1978
With S & P Brunsfeld
ID, Accession: 70733, Barcode: ID184473