Arctostaphylos patula |
Arctostaphylos glandulosa |
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green-leaf manzanita |
Eastwood manzanita, Eastwood's 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 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 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 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, 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, 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 | 2–7 mm, glabrous or white-hairy. |
3–10 mm, sparsely hairy to finely glandular-hairy. |
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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. |
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 patula |
Arctostaphylos glandulosa |
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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; nw Mexico
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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 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. 416. | FNA vol. 8, p. 442. | ||||||||||||||||||||||||||||
Parent taxa | Ericaceae > subfam. Arbutoideae > Arctostaphylos | Ericaceae > subfam. Arbutoideae > Arctostaphylos | ||||||||||||||||||||||||||||
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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: 82. 1897 , | ||||||||||||||||||||||||||||
Web links |