CNPS

CNPS Rare Plant Inventory

Species Details

Arctostaphylos densiflora

Vine Hill manzanita

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Photo by © 2006 Steve Matson max-height:128px; max-width:145px;
© 2006 Steve Matson 		Photo by © 2006 Steve Matson max-height:128px; max-width:145px;
© 2006 Steve Matson 		Photo by © 2010 Aaron Arthur max-height:128px; max-width:145px;
© 2010 Aaron Arthur

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:

Conservation Status

CA Rare Plant Rank: 1B.1
Fed List: None
State List: CE (1981-08-01)
Global Rank: G1
State Rank:
 S1
Other Status:
CRPR Changes:
Add Date: 1974-01-01
Date Edited: 2022-02-01

Ecology and Life History

Lifeform: perennial evergreen shrub
Blooming Period: Feb-Apr
Elevation:
50 - 120 meters
165 - 395 feet
General Habitat:
  • Chaparral (acid marine sand)
General Micro Habitat:
Micro Habitat:

Notes

Notes:
Known from fewer than 5 occurrences. Threatened by fungal infection. See Leaflets of Western Botany 1(4):31 (1932) for original description.
Threats:
Taxonomy:
Other:

Occurrence Data from the CNDDB

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

Location

California Endemic:
California Island:
States: Name (Code)
California (CA)
California Counties and Islands: Name (Code)
Sonoma (SON)
Quads: Name (Quad Code)
Sebastopol (3812247)
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
Print this Map
Counties   Quads

Selected References

Suggested Citation:
California Native Plant Society, Rare Plant Program. 2022. Rare Plant Inventory (online edition, v9-01 1.5). Website https://www.rareplants.cnps.org [accessed 25 May 2022].