Arctostaphylos osoensis is a species of manzanita known by the common name Oso manzanita. It is endemic to San Luis Obispo County, California, where it is known from only two occurrences on the northern edge of the Los Osos Valley.
This is a spreading shrub reaching at least a meter in height and known to grow over four meters tall. The bark is grayish in color and shreddy. The foliage is dense with shiny, pointed, smooth-edged or toothed green to reddish leaves each up to 3 centimeters long.
- Jepson Manual Treatment — Arctostaphylos osoensis
- USDA Plants Profile: Arctostaphylos osoensis
- Arctostaphylos osoensis — Photo gallery
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