CNPS

CNPS Rare Plant Inventory

Species Details

Acmispon argophyllus var. niveus

Santa Cruz Island bird's-foot trefoil

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Photo of Acmispon argophyllus var. niveus
© 2017 John Game 		Photo of Acmispon argophyllus var. niveus
© 2021 Zoya Akulova 		Photo of Acmispon argophyllus var. niveus
© 2009 Gary A. Monroe

  Classification

Scientific Name:
Acmispon argophyllus (A. Gray) Brouillet var. niveus (Greene) Brouillet
Common Name:
Santa Cruz Island bird's-foot trefoil
Family: Fabaceae
Element Code: PDFAB2A048
USDA Plants Symbol:
Synonyms/Other Names:

  Conservation Status

CA Rare Plant Rank: 4.3
Fed List: None
State List: CE (1981-08-01)
Global Rank: G5T3
State Rank:
 S3
Other Status: SB_CalBG/RSABG
CRPR Changes:
changed from 4.2 to 4.3 on 2012-02-24
Add Date: 1974-01-01
Date Edited: 2022-01-05

  Ecology and Life History

Lifeform: perennial herb
Blooming Period: Mar-Jul(Sep)
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Elevation:
5 - 680 meters
15 - 2230 feet
General Habitats:
  • Coastal bluff scrub
  • Chaparral
  • Coastal scrub
Microhabitat Details:
Microhabitat:
  • Rocky

  Notes

Notes:
Increasing after reduction of feral sheep population.
Threats:
Taxonomy:

  Threat List Data from the CNDDB

Threat List Total: 2
Total EOs % of EOs
EOs with Threat Listed: 4 17 %
THREAT LIST:
Grazing 3 12%
Non-native animal impacts 1 4%

  Occurrence Data from the CNDDB

Total Occurrences: 24
Element Occurrence Ranks:
A B C D X U
0 0 0 0 0 24
Occurrence Status:
Historical >20 Years 24
Recent <=20 Years 0
Presence:
Presumed Extant 24
Possibly Extirpated 0
Presumed Extirpated 0

  Location

California Endemic:
California Island:
States: Name (Code)
California (CA)
California Counties and Islands: Name (Code)
Santa Barbara (SBA), Ventura (VEN)
Quads: Name (Quad Code)
Santa Cruz Island A (3311987), Santa Cruz Island B (3311986), Santa Cruz Island C (3311985), Santa Cruz Island D (3311984)
Notes:
Definitions of codes following a county and/or quad:
* Presumed extirpated
(?) Occurrence confirmed, but possibly extirpated
Quad and county data is imported from the CNDDB. Species may be present in other areas where conditions are favorable. These data should NOT be substituted for pre-project review or for on-site surveys.
Regional Map

  Map

Presumed Extant
Click on quad for name. Hold Shift Key to use mouse scroll wheel

  Selected References

Suggested Citation:
California Native Plant Society, Rare Plant Program. 2024. Rare Plant Inventory (online edition, v9.5). Website https://www.rareplants.cnps.org [accessed 21 November 2024].