Species Details
Arctostaphylos pallida
pallid manzanita
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Scientific Name: Arctostaphylos pallida Eastw. |
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Common Name: pallid manzanita |
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| Family: | Ericaceae | |
| Element Code: | PDERI04110 | |
| USDA Plants Symbol: | ARPA21 | |
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Synonyms/Other Names: |
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| CA Rare Plant Rank: | 1B.1 |
| Fed List: | FT (1998-04-22) |
| State List: | CE (1979-11-01) |
| 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: | 2022-12-06 |
| Lifeform: perennial evergreen shrub | ||||||||||||||
Blooming Period: Dec-Mar
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Elevation:
185 - 465 meters 605 - 1525 feet |
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General Habitats:
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| Microhabitat Details: siliceous shale | ||||||||||||||
Microhabitat:
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Notes: Known from fewer than 10 occurrences in the Contra Costa Hills of the Diablo Range. Threatened by alteration of fire regimes, non-native plants, and road construction, and possibly by development, fungal infection, and hybridization. Plants from 465B are introduced. See Leaflets of Western Botany 1:76 (1933) for original description, and Four Seasons 7(4):28-46 (1987) for ecological assessment. |
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Threats: |
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Taxonomy: |
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| Threat List Total: | 14 | |
| Total EOs | % of EOs | |
| EOs with Threat Listed: | 9 | 100 % |
| THREAT LIST: | ||
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| Other | 8 | 88% |
| Road/trail construction/maint. | 4 | 44% |
| Improper burning regime | 3 | 33% |
| Non-native plant impacts | 3 | 33% |
| Development | 3 | 33% |
| Disease | 3 | 33% |
| Foot traffic/trampling | 3 | 33% |
| Wood cutting or brush clearing | 2 | 22% |
| Biocides | 1 | 11% |
| Vandalism/dumping/litter | 1 | 11% |
| Grazing | 1 | 11% |
| Erosion/runoff | 1 | 11% |
| ORV activity | 1 | 11% |
| Recreational use (non-ORV) | 1 | 11% |
| Total Occurrences: | 9 | ||||
| Element Occurrence Ranks: | |||||
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| A | B | C | D | X | U |
| 0 | 1 | 4 | 3 | 1 | 0 |
| Occurrence Status: | |||||
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| Historical >20 Years | 1 | ||||
| Recent <=20 Years | 8 | ||||
| Presence: | |||||
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| Presumed Extant | 8 | ||||
| Possibly Extirpated | 1 | ||||
| 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) Alameda (ALA), Contra Costa (CCA) |
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Quads: Name (Quad Code) Briones Valley (3712282), Oakland East (3712272), Richmond (3712283) |
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Notes:
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Presumed Extant
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