CNPS

CNPS Rare Plant Inventory

Species Details

Castilleja hololeuca

island white-felted paintbrush

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Photo of Castilleja hololeuca
Keir Morse 		Photo of Castilleja hololeuca
Steve Matson 		Photo of Castilleja hololeuca
Keir Morse

  Classification

Scientific Name:
Castilleja hololeuca Greene
Common Name:
island white-felted paintbrush
Family: Orobanchaceae
Element Code: PDSCR0D1L1
USDA Plants Symbol:
Synonyms/Other Names:

  Conservation Status

CA Rare Plant Rank: 1B.2
Fed List: None
State List: None
Global Rank: G3
State Rank:
 S3
Other Status:
CRPR Changes:
Add Date: 1980-01-01
Date Edited: 2024-10-02

  Ecology and Life History

Lifeform: perennial herb (hemiparasitic)
Blooming Period: Feb-Sep
JFMAMJJASOND
Elevation:
20 - 365 meters
65 - 1200 feet
General Habitats:
  • Closed-cone coniferous forest
  • Chaparral
  • Coastal scrub
Microhabitat Details:
Microhabitat:
  • Rocky

  Notes

Notes:
Threatened by feral herbivores on SCZ and SRO islands; also by grazing on SRO Isl.
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: 41
Element Occurrence Ranks:
A B C D X U
0 1 0 0 0 40
Occurrence Status:
Historical >20 Years 39
Recent <=20 Years 2
Presence:
Presumed Extant 41
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), Ventura (VEN)
Quads: Name (Quad Code)
Anacapa Island (3311983), San Miguel Island East (3312083), San Miguel Island West (3312084), Santa Cruz Island A (3311987), Santa Cruz Island B (3311986), Santa Cruz Island C (3311985), Santa Cruz Island D (3311984), Santa Rosa Island North (3312081), Santa Rosa Island South (3312071)
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 December 2024].