CNPS

CNPS Rare Plant Inventory

Species Details

Dudleya nesiotica

Santa Cruz Island dudleya

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  Classification

Scientific Name:
Dudleya nesiotica (Moran) Moran
Common Name:
Santa Cruz Island dudleya
Family: Crassulaceae
Element Code: PDCRA040J0
USDA Plants Symbol: DUNE
Synonyms/Other Names:

  Conservation Status

CA Rare Plant Rank: 1B.1
Fed List: FD (1997-07-31)
State List: CR (1979-11-01)
Global Rank: G1
State Rank:
 S1
Other Status: SB_CalBG/RSABG; SB_SBBG
CRPR Changes:
Add Date: 1974-01-01
Date Edited: 2024-03-06

  Ecology and Life History

Lifeform: perennial herb
Blooming Period: Apr-Jun
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Elevation:
10 - 50 meters
35 - 165 feet
General Habitats:
  • Coastal bluff scrub
  • Coastal scrub
Microhabitat Details:
Microhabitat:
  • Clay
  • Gravelly (sometimes)
  • Rocky (sometimes)

  Notes

Notes:
Known from only one occurrence near Frasier Pt. Threatened by non-native plants, erosion, and habitat degradation. Possibly threatened by climate change. See Desert Plant Life 22:99 (1951) for original description.
Threats:
Taxonomy:

  Threat List Data from the CNDDB

Threat List Total: 3
Total EOs % of EOs
EOs with Threat Listed: 1 50 %
THREAT LIST:
Erosion/runoff 1 50%
Non-native plant impacts 1 50%
Road/trail construction/maint. 1 50%

  Occurrence Data from the CNDDB

Total Occurrences: 2
Element Occurrence Ranks:
A B C D X U
0 1 0 0 0 1
Occurrence Status:
Historical >20 Years 0
Recent <=20 Years 2
Presence:
Presumed Extant 2
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 Cruz Island A (3311987)
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 21 November 2024].