CNPS.ORG Inventory of Rare and Endangered Plants - 7th edition interface
v7-18mar 3-19-18
Status: record arctostaphylos_stanfordiana_ssp._decumbens - Wed, Dec. 8, 2021, 22:38 ET b
Arctostaphylos stanfordiana ssp. decumbens
common nameRincon Ridge manzanita
CalPhotos image
more photos
© 2006 Barrett Jeffrey  Follow image link for photo data.
life form evergreen shrub
CA Rare Plant Rank
List 1B.1
LIST 1B: Rare, threatened, or endangered in California and elsewhere.
     0.1: Seriously endangered in California
state rank
S1      ranking system key
global rank
G3T1      ranking system key
Where did the "RED" code go?
CA state listingNone  
federal listingNone  
where found
MAPS - Use v8 link below.

Topographic quads (8):
Rutherford (500B) 3812244, Kenwood (501A) 3812245, Santa Rosa (501B) 3812246, Sebastopol (502A) 3812247, Calistoga (517D) 3812255, Geyserville (518B) 3812268, Warm Springs Dam (519A) 3812361, Cazadero (519D) 3812351
quad data info

Counties, states, regions:
Napa (NAP), Sonoma (SON)
A reminder: Species not recorded for a given area may nonetheless be present, especially where favorable conditions occur.
CNPS habitats•Chaparral (Chprl)(rhyolitic)
•Cismontane woodland (CmWld)
blooming period Feb-Apr(May),   Months in parentheses are uncommon.
elevation range75 - 370 meters
Known from approximately ten occurrences. Seriously threatened by development, road construction, vehicles, and viticulture. See Four Seasons 4(2):16 (1972) for original description and 9(2):60-63 (1992) for revised nomenclature.
full nameArctostaphylos stanfordiana Parry ssp. decumbens Wells
Version 8    INVENTORY VERSION 8 interface for this taxon, including GIS and more links

Additional information:
standard acronym  ARSTD4 Element Code  PDERI041G4
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 Wed, Dec. 8, 2021 from

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