CNPS

CNPS Rare Plant Inventory

Species Details

Thysanocarpus conchuliferus

Santa Cruz Island fringepod

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  Classification

Scientific Name:
Thysanocarpus conchuliferus Greene
Common Name:
Santa Cruz Island fringepod
Family: Brassicaceae
Element Code: PDBRA2Q060
USDA Plants Symbol: THCO9
Synonyms/Other Names:

  Conservation Status

CA Rare Plant Rank: 1B.2
Fed List: FE (1997-07-31)
State List: None
Global Rank: G2?
State Rank:
 S2
Other Status: SB_SBBG
CRPR Changes:
Add Date: 1974-01-01
Date Edited: 2024-03-06

  Ecology and Life History

Lifeform: annual herb
Blooming Period: Mar-Apr(May)
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Elevation:
45 - 655 meters
150 - 2150 feet
General Habitats:
  • Chaparral
  • Cismontane woodland
Microhabitat Details:
Microhabitat:
  • Rocky

  Notes

Notes:
Known from fewer than fifteen occurrences; no plants present in 1993 or 1994 surveys, and only one known extant occurrence in 1995. Threatened by grazing, feral herbivores, and non-native plants.
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: 15
Element Occurrence Ranks:
A B C D X U
0 2 0 0 0 13
Occurrence Status:
Historical >20 Years 12
Recent <=20 Years 3
Presence:
Presumed Extant 15
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 B (3311986), Santa Cruz Island C (3311985)
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 April 2024].