Taxon Report

Acmispon prostratus (Torr. & A. Gray) Brouillet

Nuttall's acmispon

Print Report


© 2014 Andrew Borcher

  Classification
Scientific Name:
 Acmispon prostratus (Torr. & A. Gray) Brouillet
Common Name:
 Nuttall's acmispon
Family: Fabaceae
Element Code: PDFAB2A0V0
USDA Plants Symbol:
Synonyms/Other Names:
  • Lotus nuttallianus

Ecology and Life History
Lifeform: annual herb
Blooming Period: Mar-Jun(Jul) Mar-Jun(Jul)
Elevation: 0-10 (0-35)
General Habitats: Coastal dunes, Coastal scrub
Microhabitat:
Microhabitat Details:

Conservation Status
CA Rare Plant Rank: 1B.1
Global Rank: G1G2
State Rank:
 S1
State List: None
Fed List: None
Other Status: IUCN_EN; SB_CalBG/RSABG; SB_CRES; SB_USDA
CRPR Changes:

Occurrence Data from the CNDDB
Total Occurrences: 38
Element Occurrence Ranks:
   Excellent (A) 3
   Good (B) 3
   Fair (C) 9
   Poor (D) 9
   None (X) 5
   Unknown (U) 9

Location
California Endemic:  False
California Counties and Islands: Name (Code)
San Diego (SDG)
Quads: Name (Quad Code)
Del Mar (3211782), Encinitas (3311713), Imperial Beach (3211751), La Jolla (3211772), National City (3211761), Oceanside (3311724), Point Loma (3211762), San Luis Rey (3311723)

Threat List Data from the CNDDB

Threat List Total: 13
EOs with Threat Listed: Total EOs % of EOs
31 82 %
Non-native plant impacts 24 63%
Foot traffic/trampling 16 42%
Development 14 36%
Other 14 36%
Recreational use (non-ORV) 7 18%
Erosion/runoff 7 18%
Altered flood/tidal/hydrologic regime 6 15%
ORV activity 5 13%
Road/trail construction/maint. 5 13%
Vandalism/dumping/litter 5 13%
Wood cutting or brush clearing 5 13%
Biocides 3 7%
Military operations 1 2%

Notes
Threatened by development, non-native plants, and land management activities; particularly by U.S. Navy at Silver Strand and Imperial Beach. Possibly threatened by foot traffic, vehicles, and illegal dumping.
Threats:
Taxonomy:

Selected References

Citation California Native Plant Society, Rare Plant Program. 2025. Rare Plant Inventory (online edition, v9.5.1). Website https://www.rareplants.cnps.org [accessed 1 January 2025].