San Diego Management & Monitoring Program

Nuttall's acmispon
Acmispon prostratus

Kingdom Phylum Subphylum Class Order Suborder Family

Current distribution rangewide

Along coast from San Diego County to Baja California, Mexico [1].

Known Populations in San Diego County

Occurs along beaches and Mission Bay shorelines in MUs 1 and 7. Twenty-one occurrences on Conserved Lands from Border Field State Park north to the San Luis Rey River Mouth.

List status

None [2].

Habitat affinities

Coastal dunes, coastal scrub (sandy) [3], particularly well-protected back dunes with minimal human foot traffic. Elevation range 0-10 meters [4].

Taxonomy and genetics

Fabaceae family. Previously known as Lotus nuttallianus [2].

Life history demography

Annual herb [3].

Seasonal phenology

Blooms between March and July [2].


Development, nonnative plants, and land management activities. Possibly threatened by foot traffic, vehicles, and illegal dumping [2].

Nuttall's acmispon sources