Species Details

Arctostaphylos silvicola

Bonny Doon manzanita

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Scientific Name:
Arctostaphylos silvicola Jeps. & Wies.
Common Name:
Bonny Doon manzanita
Family: Ericaceae
Element Code: PDERI041F0
USDA Plants Symbol: ARSI
Synonyms/Other Names:
Lifeform: perennial evergreen shrub
Blooming Period: Jan-Mar
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Elevation:
120 - 600 meters
395 - 1970 feet
General Habitats:
  • Closed-cone coniferous forest
  • Chaparral
  • Lower montane coniferous forest
Microhabitat Details: inland marine sands
Microhabitat:
Notes:
See Erythea 8:101 (1938) for original description.
Threats:
Threatened by sand mining and urbanization.
Taxonomy:
Threat List Total: 10
Total EOs % of EOs
EOs with Threat Listed: 9 56 %
THREAT LIST:
Development 5 31%
Mining 4 25%
Improper burning regime 2 12%
ORV activity 2 12%
Other 2 12%
Total Occurrences: 16
Element Occurrence Ranks:
A B C D X U
1 1 1 1 0 12
Occurrence Status:
Historical >20 Years 10
Recent <=20 Years 6
Presence:
Presumed Extant 16
Possibly Extirpated 0
Presumed Extirpated 0
California Endemic:
California Island:
States: Name (Code)
California (CA)
California Counties and Islands: Name (Code)
Santa Cruz (SCR)
Quads: Name (Quad Code)
Big Basin (3712222), Castle Rock Ridge (3712221), Davenport (3712212), Felton (3712211), Laurel (3712118)
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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