Taxon Report
Arctostaphylos otayensis Wies. & Schreib.Otay manzanita |
 Zoya Akulova |
Taxon Summary
Arctostaphylos otayensis, commonly known as Otay manzanita, is a perennial evergreen shrub in the Ericaceae that is found only in California. It occurs within Chaparral, and Cismontane woodland, growing at elevations from 275 to 1700 meters. Arctostaphylos otayensis is ranked 1B.2, Plants Rare, Threatened or Endangered in California and Elsewhere; Moderately threatened in California.Classification
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Scientific Name: |
Arctostaphylos otayensis Wies. & Schreib. |
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Common Name: |
Otay manzanita |
| Family: | Ericaceae |
| Element Code: | PDERI040Y0 |
| USDA Plants Symbol: | AROT |
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Synonyms/Other Names: |
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Ecology and Life History
| Lifeform: | perennial evergreen shrub |
| Blooming Period: Jan-Apr | Jan-Apr |
| Elevation: | 275-1700 (900-5580) |
| General Habitats: | Chaparral, Cismontane woodland |
| Microhabitat: | |
| Microhabitat Details: | metavolcanic |
Conservation Status
| CA Rare Plant Rank: | 1B.2 |
| Global Rank: | G1 |
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State Rank: |
S1 |
| State List: | None |
| Fed List: | None |
| Other Status: | BLM_S; SB_CalBG/RSABG; SB_CRES |
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CRPR Changes: |
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Occurrence Data from the CNDDB
| Total Occurrences: | 22 |
| Element Occurrence Ranks: | |
| Excellent (A) | 2 |
| Good (B) | 1 |
| Fair (C) | 2 |
| Poor (D) | 0 |
| None (X) | 0 |
| Unknown (U) | 17 |
| California Endemic: True | |
| California Counties and Islands: Name (Code) | |
| San Diego (SDG) | |
| Quads: Name (Quad Code) | |
| Descanso (3211675), Dulzura (3211667), Jamul Mountains (3211668), Otay Mesa (3211658), Otay Mountain (3211657) | |
Threat List Data from the CNDDB
| Threat List Total: | 8 | |
| EOs with Threat Listed: | Total EOs | % of EOs |
| 6 | 27 % | |
| Development | 4 | 18% |
| Foot traffic/trampling | 2 | 9% |
| Road/trail construction/maint. | 2 | 9% |
| Altered flood/tidal/hydrologic regime | 1 | 4% |
| Improper burning regime | 1 | 4% |
| Non-native plant impacts | 1 | 4% |
| Other | 1 | 4% |
| Recreational use (non-ORV) | 1 | 4% |
Citation
California Native Plant Society, Rare Plant Program. 2025. Rare Plant Inventory (online edition, v9.5.1). Website https://www.rareplants.cnps.org [accessed 8 November 2025].