Taxon Details

Eriastrum densifolium ssp. sanctorum

Santa Ana River woollystar

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Taxon Summary:

Eriastrum densifolium ssp. sanctorum, commonly known as Santa Ana River woollystar, is a perennial herb in the Polemoniaceae that is found only in California. It occurs within Chaparral, and Coastal scrub (alluvial fans), growing at elevations from 91 to 610 meters. Eriastrum densifolium ssp. sanctorum is ranked 1B.1, Plants Rare, Threatened or Endangered in California and Elsewhere; Seriously threatened in California.

Scientific Name:
Eriastrum densifolium (Benth.) Mason ssp. sanctorum (Mlkn.) Mason
Common Name:
Santa Ana River woollystar
Family: Polemoniaceae
Element Code: PDPLM03035
USDA Plants Symbol: ERDES
Synonyms/Other Names:
Name Status: JEF, FNA, POWO,
IPNI, Tropicos
CA Rare Plant Rank: 1B.1
Fed List: FE (1987-09-28)
State List: CE (1987-01-01)
Global Rank: G4T1
State Rank:
S1
Other Status: SB_CalBG/RSABG
CRPR Changes:
Add Date: 1980-01-01
Date Edited: 2021-12-09
Lifeform: perennial herb
Blooming Period: Apr-Sep
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Elevation:
91 - 610 meters
300 - 2000 feet
General Habitats:
  • Chaparral
  • Coastal scrub (alluvial fans)
Microhabitat Details:
Microhabitat:
  • Gravelly (sometimes)
  • Sandy (sometimes)
Notes:
Threatened by development, vehicles, foot traffic, sand and gravel mining, hydrological alterations, illegal dumping, road construction, flood control projects, and non-native plants. See Crossosoma 10(5):1-8 (1984) and Fremontia 13(3):19-20 (1985) for species accounts, Fremontia 17(3):20-21 (1989) for discussion of ecology, Systematic Botany 23(3):351-368 (1999) for taxonomic information, and Madroño 50(2):101-109 (2003) for reproductive biology.
Threats:
Taxonomy:
Threat List Total: 21
Total EOs % of EOs
EOs with Threat Listed: 30 94 %
THREAT LIST:
ORV activity 15 46%
Development 13 40%
Other 10 31%
Altered flood/tidal/hydrologic regime 9 28%
Foot traffic/trampling 8 25%
Total Occurrences: 32
Element Occurrence Ranks:
A B C D X U
2 4 11 5 4 6
Occurrence Status:
Historical >20 Years 13
Recent <=20 Years 19
Presence:
Presumed Extant 28
Possibly Extirpated 2
Presumed Extirpated 2
California Endemic:
California Island:
States: Name (Code)
California (CA)
California Counties and Islands: Name (Code)
Orange (ORA)*, Riverside (RIV), San Bernardino (SBD)
Quads: Name (Quad Code)
Black Star Canyon (3311776)*, Corona North (3311785), Devore (3411724)*, Fontana (3411714), Forest Falls (3411618), Keller Peak (3411721), Orange (3311777), Prado Dam (3311786), Redlands (3411712), Riverside West (3311784), San Bernardino North (3411723), San Bernardino South (3411713), Yorba Linda (3311787), Yucaipa (3411711)
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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