CNPS.ORG Inventory of Rare and Endangered Plants - 7th edition interface
v7-18mar 3-19-18
Status: record arctostaphylos_pilosula - Wed, Dec. 8, 2021, 23:55 ET b
Arctostaphylos pilosula
common nameSanta Margarita manzanita
CalPhotos image
more photos
© 1993 David Graber  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
S2?     S2: 6-20 occurrences OR 1,000-3,000 individuals OR 2,000-10,000 acres
global rank
G2?      ranking system key
Where did the "RED" code go?
CA state listingNone  
federal listingNone  
where found
MAPS - Use v8 link below.

Topographic quads (14):
Caldwell Mesa (220A) 3512023, Tar Spring Ridge (220B) 3512024, Nipomo (220C) 3512014, Huasna Peak (220D) 3512013, Arroyo Grande NE (221A) 3512025, Pismo Beach (221B) 3512026, Oceano (221D) 3512015, Port San Luis (222A) 3512027, La Panza (244C) 3512032, Santa Margarita Lake (245C) 3512034, Pozo Summit (245D) 3512033, Atascadero (246B) 3512046, San Luis Obispo (246C) 3512036, Cypress Mountain (270C) 3512058
quad data info

Counties, states, regions:
San Luis Obispo (SLO)
A reminder: Species not recorded for a given area may nonetheless be present, especially where favorable conditions occur.
CNPS habitats•Broadleafed upland forest (BUFrs)
•Closed-cone coniferous forest (CCFrs)
•Chaparral (Chprl)
•Cismontane woodland (CmWld)/Sometimes sandstone.
blooming period Dec-May  
elevation range75 - 1100 meters
Threatened by development, road construction, road maintenance, vehicles, vegetation clearing, and non-native plants. Plants from the coastal sector of the San Luis Range and Arroyo Grande drainage in SLO Co. were previously treated as A. wellsii. See Erythea 8:101 (1938) for original description.
full nameArctostaphylos pilosula Jeps. & Wies.
Version 8    INVENTORY VERSION 8 interface for this taxon, including GIS and more links

Additional information:
standard acronym  ARPI Element Code  PDERI042Z0
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

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