Acmispon decumbens is a species of flowering plant in the family Fabaceae, native to the western United States (Nevada, California) and north-western Mexico (Baja California). It was first described by George Bentham in 1836 as Hosackia decumbens.
It grows in several types of habitat, including mountain forest and meadows. It is a spreading or mat-forming perennial herb coated in long hairs. It is lined with leaves each made up of small green oval leaflets. The inflorescence bears up 12 pinkish yellow pealike flowers each a centimeter long or more. The fruit is a slender, bent, beaked legume pod.
Two varieties are recognized: