Arctostaphylos obispoensis

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Arctostaphylos obispoensis
Arctostaphylos obispoensis - Leaning Pine Arboretum - DSC05643.JPG
Scientific classification
Kingdom: Plantae
(unranked): Angiosperms
(unranked): Eudicots
(unranked): Asterids
Order: Ericales
Family: Ericaceae
Genus: Arctostaphylos
Species: A. obispoensis
Binomial name
Arctostaphylos obispoensis

Arctostaphylos obispoensis is a species of manzanita, known by the common names bishop manzanita and serpentine manzanita, endemic to California. [1]


The plant is endemic to the southern Santa Lucia Mountains, in the Central Coast region of California. [1] It is found primarily in San Luis Obispo County, and extends into southern Monterey County. [1] [2]

It grows in chaparral and closed-cone pine forest habitats, usually on serpentine soil. It is found at elevations of 60–950 metres (200–3,120 ft). [3]


It is protected within the Cuesta Ridge Botanical Special Interest Area of the Los Padres National Forest, growing in the endemic Sargent cypress (Cupressus sargentii) forest. [4] The species is listed on the California Native Plant Society Inventory of Rare and Endangered Plants as a rare but not currently endangered species. [5]


Arctostaphylos obispoensis is an upright shrub or multi-trunked tree growing to 1–4 metres (3.3–13.1 ft) in height. [1][3]

The small branches and newer leaves are woolly. The mature leaves are glaucous-gray, hairless, and oblong (northern range) to widely lance-shaped (southern range), and up to 4.5 centimeters long. [3]

The inflorescence is a dense cluster of white urn-shaped and downward facing "manzanita" flowers.

The red fruit is a round waxy drupe, 9–14 millimetres (0.35–0.55 in) in diameter. [3]

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