Acmispon decumbens var. decumbens   Sierra trefoil, Nevada birds-foot trefoil
           (Alt: Acmispon nevadensis var. nevadensis, Lotus nevadensis )
Fabaceae (Alt: Leguminosae )
non-native                      herbaceous           
Distribution:

UW Burke Herbarium Link: Acmispon decumbens var. decumbens
USDA Plants Link: Acmispon decumbens var. decumbens   (LONE4)
Flora of North America Link: Acmispon decumbens var. decumbens