Taxon Details
Ceanothus impressus var. impressus
Santa Barbara ceanothus
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© 2005 Dieter Wilken |
Taxon Summary:
Ceanothus impressus var. impressus, commonly known as Santa Barbara ceanothus, is a perennial shrub in the Rhamnaceae that is found only in California. It occurs within Chaparral, growing at elevations from 40 to 470 meters. Ceanothus impressus var. impressus is ranked 1B.2, Plants Rare, Threatened or Endangered in California and Elsewhere; Moderately threatened in California.|
Scientific Name: Ceanothus impressus Trel. var. impressus |
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Common Name: Santa Barbara ceanothus |
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| Family: | Rhamnaceae | |
| Element Code: | PDRHA040L1 | |
| USDA Plants Symbol: | CEIMI | |
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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: | G3T3 |
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State Rank: |
S3 |
| Other Status: | |
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CRPR Changes: changed from CBR to 1B.2 on 2019-05-15 |
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| Add Date: | 2006-01-10 |
| Date Edited: | 2025-10-29 |
| Lifeform: perennial shrub | ||||||||||||||
Blooming Period: Feb-Apr
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Elevation:
40 - 470 meters 130 - 1540 feet |
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General Habitats:
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| Microhabitat Details: | ||||||||||||||
Microhabitat:
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Notes: See Proceedings of the California Academy of Sciences, Series 2 1(8):112 (1888) for original description and Ceanothus pp. 219-220 (1942) by H. McMinn for revised nomenclature. |
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Threats: Possibly threatened by development, non-native plants, and road and trail construction and maintenance. |
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Taxonomy: |
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| Threat List Total: | 5 | |
| Total EOs | % of EOs | |
| EOs with Threat Listed: | 9 | 24 % |
| THREAT LIST: | ||
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| Development | 7 | 18% |
| Road/trail construction/maint. | 2 | 5% |
| Improper burning regime | 1 | 2% |
| Non-native plant impacts | 1 | 2% |
| Other | 1 | 2% |
| Total Occurrences: | 37 | ||||
| Element Occurrence Ranks: | |||||
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| A | B | C | D | X | U |
| 0 | 0 | 1 | 1 | 0 | 35 |
| Occurrence Status: | |||||
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| Historical >20 Years | 32 | ||||
| Recent <=20 Years | 5 | ||||
| Presence: | |||||
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| Presumed Extant | 37 | ||||
| Possibly Extirpated | 0 | ||||
| Presumed Extirpated | 0 | ||||
| California Endemic: | |||||||||||||
| California Island: | |||||||||||||
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States: Name (Code) California (CA) |
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California Counties and Islands: Name (Code) Santa Barbara (SBA) |
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Quads: Name (Quad Code) Casmalia (3412075), Guadalupe (3412085), Lompoc (3412064), Los Alamos (3412063), Point Arguello (3412056), Point Sal (3412086), Surf (3412065), Tranquillon Mtn. (3412055) |
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Notes:
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Presumed Extant
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