Taxon Report

Quercus parvula Greene var. parvula

Santa Cruz Island oak

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Taxon Summary

Quercus parvula var. parvula, commonly known as Santa Cruz Island oak, is a perennial evergreen shrub in the Fagaceae that is found only in California. It occurs within Chaparral, Cismontane woodland, and Closed-cone coniferous forest, growing at elevations from 30 to 915 meters. Quercus parvula var. parvula is ranked 4.2, Plants of Limited Distribution, A Watch List; Moderately threatened in California.


  Classification

Scientific Name:
Quercus parvula Greene var. parvula
Common Name:
Santa Cruz Island oak
Family: Fagaceae
Element Code: PDFAG051Q1
USDA Plants Symbol: QUPAP2
Synonyms/Other Names:

Ecology and Life History

Lifeform: perennial evergreen shrub
Blooming Period: (Mar)Apr-Jun (Mar)Apr-Jun
Elevation: 30-915 (100-3000)
General Habitats: Chaparral, Cismontane woodland, Closed-cone coniferous forest
Microhabitat:
Microhabitat Details:

Occurrence Data from the CNDDB

Total Occurrences: 0
Element Occurrence Ranks:
   Excellent (A) 0
   Good (B) 0
   Fair (C) 0
   Poor (D) 0
   None (X) 0
   Unknown (U) 0
California Endemic:  True
California Counties and Islands: Name (Code)
Santa Barbara (SBA)
Quads: Name (Quad Code)
Santa Cruz Island B (3311986), Santa Cruz Island C (3311985)

Notes

Threatened by feral animals on SCZ Isl. See Pittonia 1:40 (1887) for original description.
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 9 May 2025].