CNPS

CNPS Rare Plant Inventory

Species Details

Dudleya blochmaniae ssp. insularis

Santa Rosa Island dudleya

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  Classification

Scientific Name:
Dudleya blochmaniae (Eastw.) Moran ssp. insularis Moran
Common Name:
Santa Rosa Island dudleya
Family: Crassulaceae
Element Code: PDCRA04052
USDA Plants Symbol: DUBLI
Synonyms/Other Names:

  Conservation Status

CA Rare Plant Rank: 1B.1
Fed List: None
State List: None
Global Rank: G2T1
State Rank:
 S1
Other Status:
CRPR Changes:
Add Date: 1974-01-01
Date Edited: 2023-04-04

  Ecology and Life History

Lifeform: perennial herb
Blooming Period: Mar-Apr
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Elevation:
3 - 10 meters
10 - 35 feet
General Habitats:
  • Coastal bluff scrub
Microhabitat Details:
Microhabitat:

  Notes

Notes:
Known from only one occurrence near Old Ranch Pt. Population has been fenced as of 1996; still possibly threatened by cattle trampling, grazing by feral herbivores, non-native plants and horticultural collecting.
Threats:
Taxonomy:

  Threat List Data from the CNDDB

Threat List Total: 0
Total EOs % of EOs
EOs with Threat Listed: 0 %
THREAT LIST:
No threats

  Occurrence Data from the CNDDB

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

  Location

California Endemic:
California Island:
States: Name (Code)
California (CA)
California Counties and Islands: Name (Code)
Santa Barbara (SBA)
Quads: Name (Quad Code)
Santa Rosa Island East (3311988)
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 22 December 2024].