CNPS

CNPS Rare Plant Inventory

Species Details

Ceanothus maritimus

maritime ceanothus

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  Classification

Scientific Name:
Ceanothus maritimus Hoov.
Common Name:
maritime ceanothus
Family: Rhamnaceae
Element Code: PDRHA040T0
USDA Plants Symbol: CEMA
Synonyms/Other Names:

  Conservation Status

CA Rare Plant Rank: 1B.2
Fed List: None
State List: CR (1978-11-01)
Global Rank: G2
State Rank:
 S2
Other Status: SB_CalBG/RSABG
CRPR Changes:
Add Date: 1974-01-01
Date Edited: 2021-10-04

  Ecology and Life History

Lifeform: perennial evergreen shrub
Blooming Period: Jan-Apr
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Elevation:
10 - 150 meters
35 - 490 feet
General Habitats:
  • Coastal bluff scrub
  • Chaparral (maritime)
  • Valley and foothill grassland
Microhabitat Details:
Microhabitat:
  • Clay

  Notes

Notes:
Known from fewer than ten occurrences; need current status information. Possibly threatened by grazing and foot traffic. See Leaflets of Western Botany 7(4):111-112 (1953) for original description.
Threats:
Taxonomy:

  Threat List Data from the CNDDB

Threat List Total: 3
Total EOs % of EOs
EOs with Threat Listed: 4 100 %
THREAT LIST:
Grazing 4 100%
Development 1 25%
Foot traffic/trampling 1 25%

  Occurrence Data from the CNDDB

Total Occurrences: 4
Element Occurrence Ranks:
A B C D X U
0 3 0 0 0 1
Occurrence Status:
Historical >20 Years 2
Recent <=20 Years 2
Presence:
Presumed Extant 4
Possibly Extirpated 0
Presumed Extirpated 0

  Location

California Endemic:
California Island:
States: Name (Code)
California (CA)
California Counties and Islands: Name (Code)
San Luis Obispo (SLO)
Quads: Name (Quad Code)
Piedras Blancas (3512163), San Simeon (3512162)
Notes:
Definitions of codes following a county and/or quad:
* Presumed extirpated
(?) Occurrence confirmed, but possibly extirpated
Quad and county data is imported from the CNDDB. Species may be present in other areas where conditions are favorable. These data should NOT be substituted for pre-project review or for on-site surveys.
Regional Map

  Map

Presumed Extant
Click on quad for name. Hold Shift Key to use mouse scroll wheel

  Selected References

Suggested Citation:
California Native Plant Society, Rare Plant Program. 2024. Rare Plant Inventory (online edition, v9.5). Website https://www.rareplants.cnps.org [accessed 19 December 2024].