Taxon Details
Arctostaphylos virgata
Marin manzanita
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© 2022 Roger Stephens |
© 2018 John Doyen |
Taxon Summary:
Arctostaphylos virgata, commonly known as Marin manzanita, is a perennial evergreen shrub in the Ericaceae that is found only in California. It occurs within Broadleafed upland forest, Chaparral, Closed-cone coniferous forest, and North Coast coniferous forest, growing at elevations from 60 to 700 meters. Arctostaphylos virgata is ranked 1B.2, Plants Rare, Threatened or Endangered in California and Elsewhere; Moderately threatened in California.|
Scientific Name: Arctostaphylos virgata Eastw. |
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Common Name: Marin manzanita |
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| Family: | Ericaceae | |
| Element Code: | PDERI041K0 | |
| USDA Plants Symbol: | ARVI3 | |
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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: | G2 |
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State Rank: |
S2 |
| Other Status: | SB_CalBG/RSABG; SB_USDA |
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CRPR Changes: |
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| Add Date: | 1974-01-01 |
| Date Edited: | 2025-09-23 |
| Lifeform: perennial evergreen shrub | ||||||||||||||
Blooming Period: Jan-Mar
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Elevation:
60 - 700 meters 195 - 2295 feet |
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General Habitats:
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| Microhabitat Details: | ||||||||||||||
Microhabitat:
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| Threat List Total: | 5 | |
| Total EOs | % of EOs | |
| EOs with Threat Listed: | 16 | 50 % |
| THREAT LIST: | ||
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| Other | 9 | 28% |
| Road/trail construction/maint. | 9 | 28% |
| Wood cutting or brush clearing | 6 | 18% |
| Erosion/runoff | 1 | 3% |
| Non-native plant impacts | 1 | 3% |
| Total Occurrences: | 32 | ||||
| Element Occurrence Ranks: | |||||
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| A | B | C | D | X | U |
| 1 | 4 | 3 | 2 | 0 | 22 |
| Occurrence Status: | |||||
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| Historical >20 Years | 28 | ||||
| Recent <=20 Years | 4 | ||||
| Presence: | |||||
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| Presumed Extant | 32 | ||||
| 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) Marin (MRN) |
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Quads: Name (Quad Code) Bolinas (3712286), Double Point (3712287), Drakes Bay (3812218), Inverness (3812217), San Geronimo (3812216), San Rafael (3712285), Tomales (3812228) |
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Notes:
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Presumed Extant
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