Taxon Report
Ceanothus rigidus Nutt.Monterey ceanothus |
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Taxon Summary
Ceanothus rigidus, commonly known as Monterey ceanothus, is a perennial evergreen shrub in the Rhamnaceae that is found only in California. It occurs within Chaparral, Closed-cone coniferous forest, and Coastal scrub, growing at elevations from 3 to 550 meters. Ceanothus rigidus is ranked 4.2, Plants of Limited Distribution, A Watch List; Moderately threatened in California.Classification
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Scientific Name: |
Ceanothus rigidus Nutt. |
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Common Name: |
Monterey ceanothus |
| Family: | Rhamnaceae |
| Element Code: | PDRHA04067 |
| USDA Plants Symbol: | |
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Synonyms/Other Names: |
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Ecology and Life History
| Lifeform: | perennial evergreen shrub |
| Blooming Period: Feb-Apr(Jun) | Feb-Apr(Jun) |
| Elevation: | 3-550 (10-1805) |
| General Habitats: | Chaparral, Closed-cone coniferous forest, Coastal scrub |
| Microhabitat: | Sandy |
| Microhabitat Details: |
Conservation Status
| CA Rare Plant Rank: | 4.2 |
| Global Rank: | G4 |
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State Rank: |
S4 |
| State List: | None |
| Fed List: | None |
| Other Status: | SB_SBBG |
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CRPR Changes: |
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Occurrence Data from the CNDDB
| Total Occurrences: | 0 |
| Element Occurrence Ranks: | |
| Excellent (A) | 0 |
| Good (B) | 0 |
| Fair (C) | 0 |
| Poor (D) | 0 |
| None (X) | 0 |
| Unknown (U) | 0 |
| California Endemic: True | |
| California Counties and Islands: Name (Code) | |
| Monterey (MNT) | |
| Quads: Name (Quad Code) | |
| Big Sur (3612137), Marina (3612167), Monterey (3612158), Mt. Carmel (3612147), Prunedale (3612176), Salinas (3612166), Seaside (3612157), Soberanes Point (3612148), Spreckels (3612156), Watsonville East (3612186) | |
Threat List Data from the CNDDB
| Threat List Total: | 0 | |
| EOs with Threat Listed: | Total EOs | % of EOs |
| 0 | 0 % | |
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].