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Taxon  Report  
Arctostaphylos imbricata  Eastw.
San bruno mountain manzanita,   San bruno mtn. manzanita
Arctostaphylos imbricata is a shrub that is native to California, and endemic (limited) to California.
California Rare Plant Rank: 1B.1 (rare, threatened, or endangered in CA and elsewhere).
State of California status: Endangered.
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Observation Search
~66 records in California
yellowone or more occurrences
within a 7.5-minute quadrangle
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Bloom Period
Genus: Arctostaphylos
Family: Ericaceae  
Category: angiosperm  
PLANTS group:Dicot
Jepson eFlora section: eudicot

Communities: Chaparral
Name Status:
Accepted by JEF + CNPS + PLANTS

Alternate Names:
JEF + PLANTSArctostaphylos andersonii var. imbricata
Information about  Arctostaphylos imbricata from other sources
Nursery availability from CNPLX
This plant is available commercially.
Jepson eFlora

USDA PLANTS Profile (ARIM)

Photos on Calflora

Photos on CalPhotos

Google Images

Photos on iNaturalist

ID Tips on PlantID.net

[Wikipedia] Description, Range: Arctostaphylos imbricata is a species of manzanita known by the common name San Bruno Mountain manzanita. It is endemic to San Mateo County, California, where it is known only from six populations on San Bruno Mountain. Despite its rarity, this manzanita is not a federally listed endangered species because five of its six remaining populations are protected by the San Bruno Mountain Habitat Conservation Plan.[2] This plant grows in the chaparral plant community. Like many other chaparral species, it requires wildfire for reproduction. Fire suppression in its native habitat is one threat to its survival. Description Arctostaphylos imbricata is a small, spreading, matlike shrub forming flat tangles or mounds less than a meter in height. The branches are coated in long bristles tipped in resin glands. The light green, glandular leaves are round to oval with rough, bristly, dull surfaces and smooth or toothed edges. They are up to 4 centimeters long and 3 wide. The dense inflorescence is crowded with rounded, urn-shaped white flowers, each only 3 to 5 millimeters long. The fruit is a hairy, glandular drupe about 7 millimeters wide. (contributed by Mary Ann Machi)


Suggested Citation
Calflora: Information on California plants for education, research and conservation, with data contributed by public and private institutions and individuals. [web application]. 2024. Berkeley, California: The Calflora Database [a non-profit organization]. Available: https://www.calflora.org/   (Accessed: 04/19/2024).