CNPS Inventory Plant Detail

Arctostaphylos myrtifolia

Common Name:	Ione manzanita
Family:	Ericaceae
Synonyms:
Element Code:	PDERI04240
Full Name:	Arctostaphylos myrtifolia Parry
USDA PLANTS Symbol:	ARMY

Biology
Lifeform: perennial evergreen shrub Blooming Period: November - March Habitat: acidic, Ione soil, clay or sandy. • Chaparral • Cismontane woodland

Rarity Status
Rare Plant Rank: 1B.2 Rare, threatened, or endangered in California and elsewhere .2: Fairly endangered in California Federal Listing Status: FT Threatened (05/26/99) State Listing Status: Not Listed State Rank: S2 S2: Imperiled. Global Rank: G2 G2: Imperiled.

Occurrence Data from DFG
California Natural Diversity Database

Total # of Known Element Occurrences: 15
Element Occurrence Ranks:

A B C D X U

2 6 0 0 0 7

Population Status:

Historic >20 yrs	Recent <=20 yrs
7	8

Presence:

Present Extant	Possibly Extirpated	Extirpated
15	0	0

Notes

Threatened by erosion, mining, development and fungal infection. Protected in part at Ione Manzanita ACEC (BLM) and Apricum Hill ER (DFG), both in AMA Co. See Pittonia 1:34 (1887) for original description, Ecology 45(4):792-808 (1964) for ecological discussion, and Changing Seasons 1(4):4-19 (1982) for species account.
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: 2010-03-15

Location

Elevation: 60 - 580 meters

California Endemic: yes

States: California

California Counties and Islands: name (code)
Amador (AMA), Calaveras (CAL)

Quads: name (DWR code) USGS code
Calaveritas (476A) 38120B5, San Andreas (476B) 38120B6, Valley Springs (477A) 38120B7, Wallace (477B) 38120B8, Mokelumne Hill (493C) 38120C6, Irish Hill (494B) 38120D8, Ione (494C) 38120C8, Jackson (494D) 38120C7, Carbondale (495A) 38121D1

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 Wildlife: CNDDB Quick Viewer

Suggested Citation
California Native Plant Society (CNPS). Inventory of Rare and Endangered Plants (online edition, v8-02). California Native Plant Society. Sacramento, CA. Accessed on .

-120.75,38.25