riverbar bird's-foot trefoil

Acmispon denticulatus (previously Lotus denticulatus)is a species of legume known by the common name riverbar bird's-foot trefoil. It is native to western North America from British Columbia to California to Utah, where it grows in moist spots in a number of habitat types. It is an annual herb growing erect or spreading to about 40 cm in maximum length. It is lined with leaves each made up of a few alternately arranged oval leaflets 1 to 2 cm...