Taxon Details
Ceanothus otayensis
Otay Mountain ceanothus
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Taxon Summary:
Ceanothus otayensis, commonly known as Otay Mountain ceanothus, is a perennial evergreen shrub in the Rhamnaceae that is found in California and elsewhere. It occurs within Chaparral (gabbroic, and metavolcanic), growing at elevations from 600 to 1100 meters. Ceanothus otayensis is ranked 1B.2, Plants Rare, Threatened or Endangered in California and Elsewhere; Moderately threatened in California.|
Scientific Name: Ceanothus otayensis McMinn |
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Common Name: Otay Mountain ceanothus |
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| Family: | Rhamnaceae | |
| Element Code: | PDRHA04430 | |
| USDA Plants Symbol: | ||
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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: | G1G2 |
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State Rank: |
S1 |
| Other Status: | BLM_S; SB_CalBG/RSABG; SB_CRES |
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CRPR Changes: |
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| Add Date: | 2001-01-01 |
| Date Edited: | 2022-12-06 |
| Lifeform: perennial evergreen shrub | ||||||||||||||
Blooming Period: Jan-Apr
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Elevation:
600 - 1100 meters 1970 - 3610 feet |
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General Habitats:
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| Microhabitat Details: | ||||||||||||||
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Microhabitat:
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Notes: Known in CA only from the San Miguel and Otay mountains. Probably originated as hybrid between C. crassifolius and C. greggii var. perplexans; see the former in The Jepson Manual. Threatened by alteration of fire regimes, and possibly by Border Patrol activities. See Ceanothus 2:273 (1942) for original description. |
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Threats: |
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Taxonomy: |
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| Threat List Total: | 4 | |
| Total EOs | % of EOs | |
| EOs with Threat Listed: | 12 | 46 % |
| THREAT LIST: | ||
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| Foot traffic/trampling | 12 | 46% |
| Other | 12 | 46% |
| Improper burning regime | 11 | 42% |
| Road/trail construction/maint. | 2 | 7% |
| Total Occurrences: | 26 | ||||
| Element Occurrence Ranks: | |||||
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| A | B | C | D | X | U |
| 1 | 1 | 1 | 1 | 0 | 22 |
| Occurrence Status: | |||||
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| Historical >20 Years | 8 | ||||
| Recent <=20 Years | 18 | ||||
| Presence: | |||||
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| Presumed Extant | 26 | ||||
| Possibly Extirpated | 0 | ||||
| Presumed Extirpated | 0 | ||||
| California Endemic: | |||||||||||||
| California Island: | |||||||||||||
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States: Name (Code) Baja California (BA), California (CA) |
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California Counties and Islands: Name (Code) San Diego (SDG) |
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Quads: Name (Quad Code) Campo (3211654), Dulzura (3211667), Jamul Mountains (3211668), La Jolla (3211772), La Mesa (3211771), Otay Mesa (3211658), Otay Mountain (3211657), Ramona (3311617), Tecate (3211656) |
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Notes:
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Presumed Extant
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