Arctostaphylos patula |
Arctostaphylos canescens |
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green-leaf manzanita |
downy manzanita, hoary manzanita |
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Habit | Shrubs, erect or mound-forming, 1–3 m; burl usually absent, sometimes flat, obscure; twigs usually densely short-hairy with golden glands on tips of hairs, rarely short white-hairy and eglandular. | Shrubs, erect, 0.3–3 m; burl absent; twigs densely short soft-hairy to white-tomentose. | ||||
Leaves | petiole 7–15 mm; blade bright green (lightly gray-green if short-hairy), shiny, widely ovate to orbiculate, 2.5–6 × 1.5–4 cm, base rounded, truncate, or slightly lobed, (not clasping), margins entire, plane, surfaces smooth, glabrous or, rarely, short-hairy. |
petiole 3–10 mm; blade whitish gray, dull, orbiculate-ovate, ovate, or elliptic, 2–5 × 1–3 cm, base rounded to cuneate, margins entire, plane, surfaces smooth, gray-canescent, glabrescent. |
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Inflorescences | panicles, 2–8-branched; immature inflorescence pendent, branches spreading, axis 1.5–3 cm, 1+ mm diam., hairy with golden glands on tips of hairs or short-hairy and eglandular; bracts appressed with incurved tips, scalelike, deltate, 4–6 mm, apex acuminate, surfaces usually densely tomentose with golden glands on tips of hairs, rarely short white-hairy and eglandular. |
panicles, 1–3-branched, immature inflorescence pendent, (branches crowded, bell-shaped, ± obscured by bracts), axis 1–2 cm, 1+ mm diam., densely short soft-hairy to white-tomentose; bracts not appressed, (spreading), leaflike, wide-lanceolate, 6–20 mm, apex acute, surfaces canescent. |
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Pedicels | 2–7 mm, glabrous or white-hairy. |
5–9 mm, hairy, sometimes glandular. |
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Flowers | corolla mostly pink, conic to urceolate; ovary glabrous or white-hairy. |
corolla white to pink, conic to urceolate; ovary densely white-hairy, sometimes glandular. |
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Fruits | depressed-globose, sometimes subglobose, 7–10 mm diam., glabrous. |
depressed-globose, 5–10 mm diam., sparsely hairy or glabrous, sometimes sparsely glandular. |
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Stones | distinct. |
distinct. |
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2n | = 26. |
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Arctostaphylos patula |
Arctostaphylos canescens |
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Phenology | Flowering late spring–early summer. | |||||
Habitat | Mountain chaparral and forests | |||||
Elevation | 400-3000 m (1300-9800 ft) | |||||
Distribution |
AZ; CA; CO; MT; NV; OR; UT; WA; Mexico (Baja California)
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CA; OR
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Discussion | Arctostaphylos patula is abundant and widespread in western North America as a dominant in montane chaparral, pine forest gaps, and high-elevation arid-steppe and canyon-land environments. Populations throughout western North America are characterized by twigs and inflorescence parts covered with relatively short hairs tipped with golden glands. In the central to northern Sierra Nevada, mixed with the widespread form are individuals that are eglandular and have a cover of relatively short, whitish hairs on the stems and inflorescences. Similarly, throughout most of its range, A. patula is nonsprouting after fire, and in areas characterized by winter snow cover it layers and creates broad, low mounds. In much of California, it typically sprouts after fires from obscure and flattened burls, forming circles of erect sprouts. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Subspecies 2 (2 in the flora). Arctostaphylos canescens is widespread in the Coast Ranges of central and northern California and northward into southwestern Oregon. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
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Key |
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Source | FNA vol. 8, p. 416. | FNA vol. 8, p. 429. | ||||
Parent taxa | Ericaceae > subfam. Arbutoideae > Arctostaphylos | Ericaceae > subfam. Arbutoideae > Arctostaphylos | ||||
Sibling taxa | ||||||
Subordinate taxa | ||||||
Synonyms | A. acutifolia, A. parryana var. pinetorum, A. patula var. coalescens, A. patula subsp. platyphylla, A. platyphylla | |||||
Name authority | Greene: Pittonia 2: 171. 1891 , | Eastwood: Proc. Calif. Acad. Sci., ser. 3, 1: 84. 1897 , | ||||
Web links |