Taxon Report
Ceanothus maritimus Hoov.maritime ceanothus |
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Taxon Summary
Ceanothus maritimus, commonly known as maritime ceanothus, is a perennial evergreen shrub in the Rhamnaceae that is found only in California. It occurs within Chaparral (maritime), Coastal bluff scrub, and Valley and foothill grassland, growing at elevations from 10 to 150 meters. Ceanothus maritimus is ranked 1B.2, Plants Rare, Threatened or Endangered in California and Elsewhere; Moderately threatened in California.Classification
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Scientific Name: |
Ceanothus maritimus Hoov. |
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Common Name: |
maritime ceanothus |
| Family: | Rhamnaceae |
| Element Code: | PDRHA040T0 |
| USDA Plants Symbol: | CEMA |
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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: | 10-150 (35-490) |
| General Habitats: | Chaparral, Coastal bluff scrub, Valley and foothill grassland |
| Microhabitat: | Clay |
| Microhabitat Details: |
Conservation Status
| CA Rare Plant Rank: | 1B.2 |
| Global Rank: | G2 |
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State Rank: |
S2 |
| State List: | CR |
| Fed List: | None |
| Other Status: | SB_CalBG/RSABG |
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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) | 3 |
| Fair (C) | 0 |
| Poor (D) | 0 |
| None (X) | 0 |
| Unknown (U) | 1 |
| California Endemic: True | |
| California Counties and Islands: Name (Code) | |
| San Luis Obispo (SLO) | |
| Quads: Name (Quad Code) | |
| Piedras Blancas (3512163), San Simeon (3512162) | |
Threat List Data from the CNDDB
| Threat List Total: | 3 | |
| EOs with Threat Listed: | Total EOs | % of EOs |
| 4 | 100 % | |
| Grazing | 4 | 100% |
| Development | 1 | 25% |
| Foot traffic/trampling | 1 | 25% |
Citation
California Native Plant Society, Rare Plant Program. 2025. Rare Plant Inventory (online edition, v9.5.1). Website https://www.rareplants.cnps.org [accessed 27 October 2025].