CNPS.ORG Inventory of Rare and Endangered Plants - 7th edition interface
v7-18mar 3-19-18
Status: record arctostaphylos_myrtifolia - Thu, Dec. 2, 2021, 11:20 ET b
Arctostaphylos myrtifolia
common nameIone manzanita
CalPhotos image
more photos
Charles Webber © 1998 California Academy of Sciences  Follow image link for photo data.
life form evergreen shrub
CA Rare Plant Rank
List 1B.2
LIST 1B: Rare, threatened, or endangered in California and elsewhere.
     0.2: Fairly endangered in California
state rank
S1S2   S1S2: Intermediate between S1 and S2
global rank
G1G2   G1G2: Intermediate between G1 and G2
Where did the "RED" code go?
CA state listingNone  
federal listingThreatened  05/26/99
where found
MAPS - Use v8 link below.

Topographic quads (9):
Calaveritas (476A) 3812025, San Andreas (476B) 3812026, Valley Springs (477A) 3812027, Wallace (477B) 3812028, Mokelumne Hill (493C) 3812036, Irish Hill (494B) 3812048, Ione (494C) 3812038, Jackson (494D) 3812037, Carbondale (495A) 3812141
quad data info

Counties, states, regions:
Amador (AMA), Calaveras (CAL)
A reminder: Species not recorded for a given area may nonetheless be present, especially where favorable conditions occur.
CNPS habitats•Chaparral (Chprl)
•Cismontane woodland (CmWld)/acidic, Ione soil, clay or sandy
blooming period Nov-Mar  
elevation range60 - 580 meters
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.
full nameArctostaphylos myrtifolia Parry
Version 8    INVENTORY VERSION 8 interface for this taxon, including GIS and more links

Additional information:
standard acronym  ARMY Element Code  PDERI04240
CalFlora species this taxon    CalFlora genus related taxa
Jepson Online Jepson Interchange  Jepson Manual and other resources
Google search
search Google CNPS website    search Google entire web

Suggested citation: California Native Plant Society (CNPS). 2018. Inventory of Rare and Endangered Plants (online edition, v7-18mar). California Native Plant Society. Sacramento, CA. Accessed on Thu, Dec. 2, 2021 from

pick and add to Plant Pressexplain the meaning of the fieldsFIRSTPREVIOUSNEXTLASTCNPS.ORGQuestions and CommentsHOMELOGIN (you are guest anonymous)   Web Oriented Database Home