Taxon Details
Arctostaphylos silvicola
Bonny Doon manzanita
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© 2021 Robert Steers |
Taxon Summary:
Arctostaphylos silvicola, commonly known as Bonny Doon manzanita, is a perennial evergreen shrub in the Ericaceae that is found only in California. It occurs within Chaparral, Closed-cone coniferous forest, and Lower montane coniferous forest, growing at elevations from 120 to 600 meters. Arctostaphylos silvicola is ranked 1B.2, Plants Rare, Threatened or Endangered in California and Elsewhere; Moderately threatened in California.|
Scientific Name: Arctostaphylos silvicola Jeps. & Wies. |
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Common Name: Bonny Doon manzanita |
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| Family: | Ericaceae | |
| Element Code: | PDERI041F0 | |
| USDA Plants Symbol: | ARSI | |
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Synonyms/Other Names: |
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| Name Status: |
JEF, FNA, POWO, IPNI, Tropicos |
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| CA Rare Plant Rank: | 1B.2 |
| Fed List: | None |
| State List: | None |
| Global Rank: | G1 |
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State Rank: |
S1 |
| Other Status: | SB_CalBG/RSABG |
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CRPR Changes: |
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| Add Date: | 1974-01-01 |
| Date Edited: | 2025-10-29 |
| Lifeform: perennial evergreen shrub | ||||||||||||||
Blooming Period: Jan-Mar
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Elevation:
120 - 600 meters 395 - 1970 feet |
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General Habitats:
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| Microhabitat Details: inland marine sands | ||||||||||||||
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Microhabitat:
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| Threat List Total: | 10 | |
| Total EOs | % of EOs | |
| EOs with Threat Listed: | 9 | 56 % |
| THREAT LIST: | ||
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| Development | 5 | 31% |
| Mining | 4 | 25% |
| Improper burning regime | 2 | 12% |
| ORV activity | 2 | 12% |
| Other | 2 | 12% |
| Recreational use (non-ORV) | 1 | 6% |
| Road/trail construction/maint. | 1 | 6% |
| Logging | 1 | 6% |
| Erosion/runoff | 1 | 6% |
| Non-native plant impacts | 1 | 6% |
| Total Occurrences: | 16 | ||||
| Element Occurrence Ranks: | |||||
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| A | B | C | D | X | U |
| 1 | 1 | 1 | 1 | 0 | 12 |
| Occurrence Status: | |||||
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| Historical >20 Years | 10 | ||||
| Recent <=20 Years | 6 | ||||
| Presence: | |||||
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| Presumed Extant | 16 | ||||
| Possibly Extirpated | 0 | ||||
| Presumed Extirpated | 0 | ||||
| California Endemic: | |||||||||||||
| California Island: | |||||||||||||
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States: Name (Code) California (CA) |
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California Counties and Islands: Name (Code) Santa Cruz (SCR) |
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Quads: Name (Quad Code) Big Basin (3712222), Castle Rock Ridge (3712221), Davenport (3712212), Felton (3712211), Laurel (3712118) |
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Notes:
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Presumed Extant
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