CNPS.ORG Inventory of Rare and Endangered Plants - 7th edition interface
v7-18mar 3-19-18
Status: record arctostaphylos_montana_ssp._ravenii - Fri, Dec. 3, 2021, 13:56 ET b
Arctostaphylos montana ssp. ravenii
common namePresidio manzanita
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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
CA state listingEndangered  11/78
federal listingEndangered  10/26/79
where found
MAPS - Use v8 link below.

Topographic quads (2):
San Francisco South (448B)* 3712264, San Francisco North (466C) 3712274
quad data info

Counties, states, regions:
San Francisco (SFO)
A reminder: Species not recorded for a given area may nonetheless be present, especially where favorable conditions occur.
CNPS habitats•Chaparral (Chprl)
•Coastal prairie (CoPrr)
•Coastal scrub (CoScr)/serpentinite outcrop
blooming period Feb-Mar  
elevation range45 - 215 meters
Known from only one extant native occurrence at the Presidio in San Francisco; plants there belong to a single clone. Five of six historical occurrences extirpated by urbanization; currently threatened by non-native plants, encroachment of native shrubs, and branch dieback due to fungal pathogen. USFWS uses the name A. pungens var. ravenii. See Madroņo 19(6):200 (1968) for original description.
full nameArctostaphylos montana Eastw. ssp. ravenii (P.V. Wells) V.T. Parker, M.C. Vasey & J.E. Keeley
Version 8    INVENTORY VERSION 8 interface for this taxon, including GIS and more links

Additional information:
standard acronym   Element Code  PDERI040J2
Jepson Online Jepson Interchange  Jepson Manual and other resources
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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 Fri, Dec. 3, 2021 from

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