Taxon Report

Arctostaphylos regismontana Eastw.

Kings Mountain manzanita

Print Report


Taxon Summary

Arctostaphylos regismontana, commonly known as Kings Mountain manzanita, is a perennial evergreen shrub in the Ericaceae that is found only in California. It occurs within Broadleafed upland forest, Chaparral, and North Coast coniferous forest, growing at elevations from 305 to 730 meters. Arctostaphylos regismontana is ranked 1B.2, Plants Rare, Threatened or Endangered in California and Elsewhere; Moderately threatened in California.


  Classification

Scientific Name:
Arctostaphylos regismontana Eastw.
Common Name:
Kings Mountain manzanita
Family: Ericaceae
Element Code: PDERI041C0
USDA Plants Symbol: ARRE7
Synonyms/Other Names:

Ecology and Life History

Lifeform: perennial evergreen shrub
Blooming Period: Dec-Apr Dec-Apr
Elevation: 305-730 (1000-2395)
General Habitats: Broadleafed upland forest, Chaparral, North Coast coniferous forest
Microhabitat: Granitic, Sandstone
Microhabitat Details:

Occurrence Data from the CNDDB

Total Occurrences: 17
Element Occurrence Ranks:
   Excellent (A) 1
   Good (B) 3
   Fair (C) 3
   Poor (D) 3
   None (X) 0
   Unknown (U) 7
California Endemic:  True
California Counties and Islands: Name (Code)
San Mateo (SMT), Santa Clara (SCL), Santa Cruz (SCR)?
Quads: Name (Quad Code)
Big Basin (3712222)?, La Honda (3712233), Mindego Hill (3712232), Montara Mountain (3712254), Woodside (3712243)

Threat List Data from the CNDDB

Threat List Total: 7
EOs with Threat Listed: Total EOs % of EOs
6 35 %
Wood cutting or brush clearing 5 29%
Road/trail construction/maint. 4 23%
Non-native plant impacts 2 11%
Recreational use (non-ORV) 1 5%
Biocides 1 5%
Disease 1 5%
Erosion/runoff 1 5%

Notes

Plants north of Big Basin in SCR Co. (408B) look intermediate; identification uncertain. Threatened by urbanization. Not regenerating well. See Leaflets of Western Botany 1:77 (1933) 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 16 March 2025].