CNPS

CNPS Rare Plant Inventory

Species Details

Berberis pinnata ssp. insularis

island barberry

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  Classification

Scientific Name:
Berberis pinnata Lag. ssp. insularis Munz
Common Name:
island barberry
Family: Berberidaceae
Element Code: PDBER060B2
USDA Plants Symbol:
Synonyms/Other Names:

  Conservation Status

CA Rare Plant Rank: 1B.2
Fed List: FE (1997-07-31)
State List: CE (1979-11-01)
Global Rank: G5T1
State Rank:
 S1
Other Status: SB_SBBG
CRPR Changes:
Add Date: 1980-01-01
Date Edited: 2021-08-25

  Ecology and Life History

Lifeform: perennial evergreen shrub
Blooming Period: Feb-May
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Elevation:
75 - 400 meters
245 - 1310 feet
General Habitats:
  • Closed-cone coniferous forest
  • Chaparral
  • Cismontane woodland
  • Coastal scrub
Microhabitat Details:
Microhabitat:
  • Rocky

  Notes

Notes:
Known from fewer than 10 occurrences. Believed to be extirpated from ANA Isl. after surveys in 1994. Last seen on SRO Isl. in 1930, despite recent surveys. Threatened by feral herbivores. See Changing Seasons 1(3):14 (1981) for revised nomenclature.
Threats:
Taxonomy:

  Threat List Data from the CNDDB

Threat List Total: 1
Total EOs % of EOs
EOs with Threat Listed: 2 25 %
THREAT LIST:
Erosion/runoff 2 25%

  Occurrence Data from the CNDDB

Total Occurrences: 8
Element Occurrence Ranks:
A B C D X U
0 3 1 0 2 2
Occurrence Status:
Historical >20 Years 4
Recent <=20 Years 4
Presence:
Presumed Extant 6
Possibly Extirpated 1
Presumed Extirpated 1

  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)*, Santa Cruz Island A (3311987), Santa Cruz Island B (3311986), Santa Rosa Island North (3312081)
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].