Arctostaphylos auriculata Eastw.
Family: Ericaceae
Mt. Diablo Manzanita
Arctostaphylos auriculata image
Walter Knight  

Shrubs, erect, 1-4.5 m; burl absent; twigs densely white-hairy with long, white hairs. Leaves: petiole to 2 mm; blade whitish gray, dull, oblong-ovate to orbiculate-ovate, 1.5-4.5 × 1.5-3 cm, base distinctly lobed, auriculate-clasping, margins entire, plane, surfaces smooth, gray-canescent, glabrescent. Inflorescences panicles, 3-5-branched; immature inflorescence pendent, (branches crowded, ± obscured by bracts), axis 1-1.5 cm, 1+ mm diam., densely white-hairy with long, white hairs; bracts somewhat appressed, leaflike, ovate to lanceolate-ovate, 5-15 mm, apex acute, surfaces canescent. Pedicels 4-10 mm, tomentose. Flowers: corolla white to pink, conic; ovary densely white-hairy. Fruits depressed-globose, 5-10 mm diam., short white-hairy, glabrescent. Stones distinct. 2n = 26.

Flowering winter-early spring. Chaparral, open, closed-cone conifer forests; of conservation concern; 300-500 m; Calif.

Arctostaphylos auriculata is found on the western slopes of Mount Diablo in Contra Costa County.

Arctostaphylos auriculata image
Walter Knight  
Arctostaphylos auriculata image
Walter Knight  
Arctostaphylos auriculata image
kqedquest  
Arctostaphylos auriculata image
kqedquest