Taxon Report
Arctostaphylos ohloneana M.C. Vasey & V.T. ParkerOhlone manzanita |
 Neal Kramer |
Taxon Summary
Arctostaphylos ohloneana, commonly known as Ohlone manzanita, is a evergreen shrub in the Ericaceae that is found only in California. It occurs within Closed-cone coniferous forest, and Coastal scrub, growing at elevations from 450 to 530 meters. Arctostaphylos ohloneana is ranked 1B.1, Plants Rare, Threatened or Endangered in California and Elsewhere; Seriously threatened in California.Classification
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Scientific Name: |
Arctostaphylos ohloneana M.C. Vasey & V.T. Parker |
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Common Name: |
Ohlone manzanita |
| Family: | Ericaceae |
| Element Code: | PDERI042Y0 |
| USDA Plants Symbol: | AROH2 |
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Synonyms/Other Names: |
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Ecology and Life History
| Lifeform: | evergreen shrub |
| Blooming Period: Feb-Mar | Feb-Mar |
| Elevation: | 450-530 (1475-1740) |
| General Habitats: | Closed-cone coniferous forest, Coastal scrub |
| Microhabitat: | |
| Microhabitat Details: | siliceous shale |
Conservation Status
| CA Rare Plant Rank: | 1B.1 |
| Global Rank: | G1 |
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State Rank: |
S1 |
| State List: | None |
| Fed List: | None |
| Other Status: | SB_CalBG/RSABG; SB_USDA |
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CRPR Changes: |
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Occurrence Data from the CNDDB
| Total Occurrences: | 4 |
| Element Occurrence Ranks: | |
| Excellent (A) | 0 |
| Good (B) | 0 |
| Fair (C) | 0 |
| Poor (D) | 0 |
| None (X) | 0 |
| Unknown (U) | 4 |
| California Endemic: True | |
| California Counties and Islands: Name (Code) | |
| Santa Cruz (SCR) | |
| Quads: Name (Quad Code) | |
| Big Basin (3712222), Davenport (3712212) | |
Threat List Data from the CNDDB
| Threat List Total: | 2 | |
| EOs with Threat Listed: | Total EOs | % of EOs |
| 4 | 100 % | |
| Disease | 4 | 100% |
| Road/trail construction/maint. | 4 | 100% |
Selected References
| Proposed Addition to CRPR 1B.1 (2009) |
Citation
California Native Plant Society, Rare Plant Program. 2025. Rare Plant Inventory (online edition, v9.5.1). Website https://www.rareplants.cnps.org [accessed 6 November 2025].