Taxon Details
Arctostaphylos stanfordiana ssp. decumbens
Rincon Ridge manzanita
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Taxon Summary:
Arctostaphylos stanfordiana ssp. decumbens, commonly known as Rincon Ridge manzanita, is a perennial evergreen shrub in the Ericaceae that is found only in California. It occurs within Chaparral (rhyolitic), and Cismontane woodland, growing at elevations from 75 to 370 meters. Arctostaphylos stanfordiana ssp. decumbens is ranked 1B.1, Plants Rare, Threatened or Endangered in California and Elsewhere; Seriously threatened in California.|
Scientific Name: Arctostaphylos stanfordiana Parry ssp. decumbens Wells |
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Common Name: Rincon Ridge manzanita |
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| Family: | Ericaceae | |
| Element Code: | PDERI041G4 | |
| USDA Plants Symbol: | ARSTD4 | |
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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.1 |
| Fed List: | None |
| State List: | None |
| Global Rank: | G3T1 |
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State Rank: |
S1 |
| Other Status: | SB_UCSC |
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CRPR Changes: |
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| Add Date: | 1984-01-01 |
| Date Edited: | 2022-12-06 |
| Lifeform: perennial evergreen shrub | ||||||||||||||
Blooming Period: Feb-Apr(May)
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Elevation:
75 - 370 meters 245 - 1215 feet |
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General Habitats:
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| Microhabitat Details: | ||||||||||||||
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Microhabitat:
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| Threat List Total: | 9 | |
| Total EOs | % of EOs | |
| EOs with Threat Listed: | 8 | 67 % |
| THREAT LIST: | ||
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| Development | 7 | 58% |
| Agriculture | 4 | 33% |
| Road/trail construction/maint. | 3 | 25% |
| ORV activity | 3 | 25% |
| Other | 1 | 8% |
| Mining | 1 | 8% |
| Non-native plant impacts | 1 | 8% |
| Vandalism/dumping/litter | 1 | 8% |
| Wood cutting or brush clearing | 1 | 8% |
| Total Occurrences: | 12 | ||||
| Element Occurrence Ranks: | |||||
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| A | B | C | D | X | U |
| 0 | 2 | 2 | 1 | 1 | 6 |
| Occurrence Status: | |||||
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| Historical >20 Years | 8 | ||||
| Recent <=20 Years | 4 | ||||
| Presence: | |||||
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| Presumed Extant | 11 | ||||
| Possibly Extirpated | 0 | ||||
| Presumed Extirpated | 1 | ||||
| California Endemic: | |||||||||||||
| California Island: | |||||||||||||
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States: Name (Code) California (CA) |
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California Counties and Islands: Name (Code) Napa (NAP), Sonoma (SON) |
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Quads: Name (Quad Code) Calistoga (3812255), Camp Meeker (3812248), Cazadero (3812351), Geyserville (3812268), Kenwood (3812245), Rutherford (3812244), Santa Rosa (3812246), Sebastopol (3812247) |
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Notes:
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Presumed Extant
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