Taxon Report

Arctostaphylos densiflora M.S. Baker

Vine Hill manzanita

Print Report


© 2006 Steve Matson

Taxon Summary

Arctostaphylos densiflora, commonly known as Vine Hill manzanita, is a perennial evergreen shrub in the Ericaceae that is found only in California. It occurs within Chaparral, growing at elevations from 50 to 120 meters. Arctostaphylos densiflora is ranked 1B.1, Plants Rare, Threatened or Endangered in California and Elsewhere; Seriously threatened in California.


  Classification

Scientific Name:
Arctostaphylos densiflora M.S. Baker
Common Name:
Vine Hill manzanita
Family: Ericaceae
Element Code: PDERI040C0
USDA Plants Symbol: ARDE2
Synonyms/Other Names:

Ecology and Life History

Lifeform: perennial evergreen shrub
Blooming Period: Feb-Apr Feb-Apr
Elevation: 50-120 (165-395)
General Habitats: Chaparral
Microhabitat:
Microhabitat Details:

Occurrence Data from the CNDDB

Total Occurrences: 2
Element Occurrence Ranks:
   Excellent (A) 0
   Good (B) 0
   Fair (C) 1
   Poor (D) 1
   None (X) 0
   Unknown (U) 0
California Endemic:  True
California Counties and Islands: Name (Code)
Sonoma (SON)
Quads: Name (Quad Code)
Sebastopol (3812247)

Threat List Data from the CNDDB

Threat List Total: 3
EOs with Threat Listed: Total EOs % of EOs
2 100 %
Disease 2 100%
Road/trail construction/maint. 2 100%
Agriculture 1 50%

Notes

See Leaflets of Western Botany 1(4):31 (1932) for original description.
Threats:
Threatened by fungal infection. 
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 17 March 2025].