Arctostaphylos auriculata |
Arctostaphylos glandulosa |
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Mount Diablo manzanita, Mt. Diablo manzanita |
Eastwood manzanita, Eastwood's manzanita |
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Habit | Shrubs, erect, 1–4.5 m; burl absent; twigs densely white-hairy with long, white hairs. | Shrubs, erect or mound-forming, 1–3 m; burl present; twigs tomentose to short-hairy, with eglandular hairs or with long, clear, pink or dark, glandular 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. |
petiole 5–10 mm; blade bright green, slightly glaucous to strongly gray-glaucous, shiny or dull, elliptic to ovate, 2–4.5 × 1–2.5 cm, base cuneate to rounded, sometimes ± lobed or truncate, margins entire or toothed, plane, surfaces papillate, scabrous or smooth, glabrous or glandular-puberulent to -hairy, puberulent, or finely tomentose, sometimes glabrescent; (abaxial surface sometimes with more stomata than adaxial surface). |
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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. |
panicles, 3–6-branched; immature inflorescence pendent, (branches crowded, not concealed by bracts), axis 1–3 cm, 1+ mm diam., short-hairy to hairy, with or without glandular hairs; bracts not appressed, variable, from scalelike and awl-like to leaflike and deltate, lanceolate, or broadly lanceolate (at least at base), 3–10 mm, apex acute, surfaces hairy or finely glandular-hairy. |
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Pedicels | 4–10 mm, tomentose. |
3–10 mm, sparsely hairy to finely glandular-hairy. |
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Flowers | corolla white to pink, conic; ovary densely white-hairy. |
corolla white to pink, conic to urceolate; ovary densely white-hairy, sometimes glandular. |
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Fruits | depressed-globose, 5–10 mm diam., short white-hairy, glabrescent. |
slightly (or markedly) depressed-globose, 6–10 mm diam., glabrous or finely glandular-hairy, (viscid). |
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Stones | distinct. |
usually mostly distinct, sometimes connate. |
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2n | = 26. |
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Arctostaphylos auriculata |
Arctostaphylos glandulosa |
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Phenology | Flowering winter–early spring. | |||||||||||||||||||||||||||||
Habitat | Chaparral, open, closed-cone conifer forests | |||||||||||||||||||||||||||||
Elevation | 300-500 m (1000-1600 ft) | |||||||||||||||||||||||||||||
Distribution |
CA |
CA; OR; nw Mexico
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Discussion | Of conservation concern. Arctostaphylos auriculata is found on the western slopes of Mount Diablo in Contra Costa County. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Subspecies 10 (8 in the flora). Arctostaphylos glandulosa occurs in the California Floristic Province from southern Oregon to northern Baja California within the Coast, Transverse, and Peninsular ranges. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
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Key |
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Source | FNA vol. 8, p. 430. | FNA vol. 8, p. 442. | ||||||||||||||||||||||||||||
Parent taxa | Ericaceae > subfam. Arbutoideae > Arctostaphylos | Ericaceae > subfam. Arbutoideae > Arctostaphylos | ||||||||||||||||||||||||||||
Sibling taxa | ||||||||||||||||||||||||||||||
Subordinate taxa | ||||||||||||||||||||||||||||||
Name authority | Eastwood: Bull. Torrey Bot. Club 32: 202. 1905 , | Eastwood: Proc. Calif. Acad. Sci., ser. 3, 1: 82. 1897 , | ||||||||||||||||||||||||||||
Web links |