Arctostaphylos auriculata
Eastw.
Family:
Ericaceae
Mt. Diablo Manzanita
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FNA
Resources
V. Thomas Parker, Michael C. Vasey, Jon E. Keeley in Flora of North America (vol. 8)
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.
2
n
= 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.
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