CNPS

CNPS Rare Plant Inventory

Species Details

Castilleja grisea

San Clemente Island paintbrush

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Photo of Castilleja grisea
© 2014 John Game 		Photo of Castilleja grisea
© 2014 John Game 		Photo of Castilleja grisea
© 2011 Neal Kramer

  Classification

Scientific Name:
Castilleja grisea Dunkle
Common Name:
San Clemente Island paintbrush
Family: Orobanchaceae
Element Code: PDSCR0D160
USDA Plants Symbol: CAGR21
Synonyms/Other Names:

  Conservation Status

CA Rare Plant Rank: 1B.3
Fed List: FD (2023-02-24)
State List: CE (1982-04-01)
Global Rank: G3
State Rank:
 S3
Other Status: SB_CalBG/RSABG; SB_SBBG
CRPR Changes:
changed from 1B.2 to 1B.3 on 2013-02-19
Add Date: 1974-01-01
Date Edited: 2023-06-06

  Ecology and Life History

Lifeform: perennial herb (hemiparasitic)
Blooming Period: Feb-Aug(Dec)
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Elevation:
10 - 535 meters
35 - 1755 feet
General Habitats:
  • Coastal bluff scrub
  • Coastal scrub
Microhabitat Details: often canyons
Microhabitat:
  • Rocky

  Notes

Notes:
Federally listed as Endangered on 1977-09-12, then listed as Threatened on 2013-08-26; Delisted due to Recovery on 2023-02-24. Significantly recovering after removal of feral herbivores on SCM Isl. by the Navy. Potentially threatened by Navy activities, frequent fire and fire control measures, erosion, and non-native plants. See Bulletin of the Southern California Academy of Sciences 42:31 (1943) for original description.
Threats:
Taxonomy:

  Threat List Data from the CNDDB

Threat List Total: 2
Total EOs % of EOs
EOs with Threat Listed: 2 5 %
THREAT LIST:
Improper burning regime 2 5%
Erosion/runoff 1 2%

  Occurrence Data from the CNDDB

Total Occurrences: 38
Element Occurrence Ranks:
A B C D X U
8 16 3 0 3 8
Occurrence Status:
Historical >20 Years 9
Recent <=20 Years 29
Presence:
Presumed Extant 35
Possibly Extirpated 3
Presumed Extirpated 0

  Location

California Endemic:
California Island:
States: Name (Code)
California (CA)
California Counties and Islands: Name (Code)
Los Angeles (LAX)
Quads: Name (Quad Code)
San Clemente Island Central (3211874), San Clemente Island North (3211885), San Clemente Island South (3211873)
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

CNPS Status Review: Proposed Rank Change from 1B.2, G3 / S3 to 1B.3, G3 / S3  (2013)
Other: Recovery Plan for Castilleja grisea (San Clemente Island Paintbrush) (USFWS 1984)
Suggested Citation:
California Native Plant Society, Rare Plant Program. 2024. Rare Plant Inventory (online edition, v9.5). Website https://www.rareplants.cnps.org [accessed 16 April 2024].