canyon birdsfoot trefoil

Acmispon argyraeus, synonym Lotus argyraeus, is a species of legume native to California and northwest Mexico. It is known by the common name canyon bird's-foot trefoil. It occurs in dry mountain habitat. It is a perennial herb lined with leaves each made up of a few oval leaflike leaflets about 1 cm long. Most of the plant is silky-hairy in texture. The inflorescence holds one to three pinkish-yellow flowers roughly 1 cm long. The fruit is...