CNPS Inventory Plant Detail

Arctostaphylos nissenana

Common Name:	Nissenan manzanita
Family:	Ericaceae
Synonyms:
Element Code:	PDERI040V0
Full Name:	Arctostaphylos nissenana Merriam
USDA PLANTS Symbol:	ARNI4

Biology
Lifeform: perennial evergreen shrub Blooming Period: February - March Habitat: rocky. • Closed-cone coniferous forest • Chaparral

Rarity Status
CA Rare Plant Rank: 1B.2 Rare, threatened, or endangered in California and elsewhere .2: Fairly endangered in California Federal Listing Status: Not Listed State Listing Status: Not Listed State Rank: S2.2 S2: Imperiled. .2: Threatened. Global Rank: G2 G2: Imperiled.

Occurrence Data from DFG
California Natural Diversity Database

Total # of Known Element Occurrences: 13
Element Occurrence Ranks:

A B C D X U

1 1 1 1 1 8

Population Status:

Historic >20 yrs	Recent <=20 yrs
9	4

Presence:

Present Extant	Possibly Extirpated	Extirpated
12	1	0

Notes

Threatened by development. See Proceedings of the Biological Society of Washington 31:102 (1918) for original description, Four Seasons 1(4):7-15 (1966) for species account, and Four Seasons 6(4):12-16 (1983) for range extension information.
To submit rare plant observation data, use the CNDDB field survey form. Please see also the CNPS Rare Plant Data page.
Date Added: 1974-01-01
Last Update: 2012-01-31

Location

Elevation: 450 - 1100 meters

California Endemic: yes

States: California

California Counties and Islands: name (code)
El Dorado (ELD), Tuolumne (TUO)

Quads: name (DWR code) USGS code
Sonora (458B) 37120H4, Camino (509B) 38120F6, Placerville (510A) 38120F7, Riverton (524C) 38120G4, Kyburz (524D) 38120G3, Slate Mtn. (525C) 38120G6, Georgetown (526A) 38120H7, Garden Valley (526D) 38120G7

Notes:

Definitions of codes preceding a county and/or quad:
*		Presumed extirpated
?		Uncertain about distribution or identity
?*		Uncertain about distribution, but presumed extirpated if once present
(?)		Occurrence confirmed, but possibly extirpated

Species may be present in other areas where conditions are favorable.

Presumed Extant

Presumed Extirpated or Unknown

Links to Leading Resources of Taxon Information
USDA PLANTS Calflora CalPhotos Consortium of California Herbaria California Department of Fish and Game: CNDDB Quick Viewer

Suggested Citation
California Native Plant Society (CNPS). Inventory of Rare and Endangered Plants (online edition, v8-01a). California Native Plant Society. Sacramento, CA. Accessed on .

-120.625,38.625