Acmispon americanus, known by the common names American bird's-foot trefoil and Spanish clover, is a species of legume native to most habitats of California, the Western United States, Western Canada, and northern Mexico.
Description The plant is an upright hairy annual, growing to 25 cm. The flowers (to 6mm) are pale pink to cream.
Subspecies Acmispon americanus is often discussed as comprising several varieties, including: Acmispon americanus var. americanus CalFlora Database: Acmispon americanus var. americanusJepson eFlora: Acmispon americanus var. americanus
References
External links CalFlora Database: Acmispon americanus Jepson eFlora: Acmispon americanus — TJM2 (2012) Jepson Manual Treatment: Lotus purshianus — JM93 (1993)