Acmispon wrangelianus is a species of legume native to California and Oregon in the southwestern United States.

[2] It is known by the common names Chilean bird's-foot trefoil[3] and Chile lotus.

It can be found in many types of habitat, including disturbed areas.

Its slender branches are lined with leaves each made of generally four small leaflets.

The inflorescence is composed of a solitary yellow pealike flower around a centimeter wide.