Taxon Report

Erysimum insulare Greene

island wallflower

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Taxon Summary

Erysimum insulare, commonly known as island wallflower, is a perennial herb in the Brassicaceae that is found only in California. It occurs within Coastal bluff scrub, and Coastal dunes, growing at elevations from 0 to 300 meters. Erysimum insulare is ranked 1B.3, Plants Rare, Threatened or Endangered in California and Elsewhere; Not very threatened in California.


  Classification

Scientific Name:
Erysimum insulare Greene
Common Name:
island wallflower
Family: Brassicaceae
Element Code: PDBRA160D1
USDA Plants Symbol: ERIN8
Synonyms/Other Names:
  • Erysimum insulare ssp. insulare

Ecology and Life History

Lifeform: perennial herb
Blooming Period: Mar-Jul Mar-Jul
Elevation: 0-300 (0-985)
General Habitats: Coastal bluff scrub, Coastal dunes
Microhabitat:
Microhabitat Details:

Occurrence Data from the CNDDB

Total Occurrences: 14
Element Occurrence Ranks:
   Excellent (A) 0
   Good (B) 0
   Fair (C) 0
   Poor (D) 0
   None (X) 0
   Unknown (U) 14
California Endemic:  True
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 B (3311986)*, Santa Rosa Island East (3311988), Santa Rosa Island North (3312081)

Notes

Last seen on SCZ Isl. in 1966.
Threats:
Taxonomy:
Citation California Native Plant Society, Rare Plant Program. 2025. Rare Plant Inventory (online edition, v9.5.1). Website https://www.rareplants.cnps.org [accessed 30 January 2025].