Taxon 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

Taxon Summary:

Acmispon argophyllus var. niveus, commonly known as Santa Cruz Island bird's-foot trefoil, is a perennial herb in the Fabaceae that is found only in California. It occurs within Chaparral, Coastal bluff scrub, and Coastal scrub, growing at elevations from 5 to 680 meters. Acmispon argophyllus var. niveus is ranked 4.3, Plants of Limited Distribution, A Watch List; Not very threatened in California.

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:
Name Status: JEF, FNA, POWO,
IPNI, Tropicos
Lifeform: perennial herb
Blooming Period: Mar-Jul(Sep)
JFMAMJJASOND
Elevation:
5 - 680 meters
15 - 2230 feet
General Habitats:
  • Coastal bluff scrub
  • Chaparral
  • Coastal scrub
Microhabitat Details:
Microhabitat:
  • Rocky
Notes:
Increasing after reduction of feral sheep population.
Threats:
Taxonomy:
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%
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
California Endemic:
California Island:
States: Name (Code)
California (CA)
California Counties and Islands: Name (Code)
Santa Barbara (SBA), Ventura (VEN)
Quads: Name (Quad Code)
San Nicolas Island (3311924), 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.
Presumed Extant
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