Arctostaphylos patula |
Arctostaphylos klamathensis |
|
---|---|---|
green-leaf manzanita |
Klamath manzanita |
|
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, prostrate or mat-forming, 0.1–0.5 m; burl absent; twigs sparsely glandular-hairy. |
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 4–7 mm, (glandular-hairy); blade glaucous, dull, obovate to oblanceolate or widely elliptic, 1–3.5 × 0.5–2.5 cm, base cuneate or obtuse, margins entire, plane, surfaces papillate, ± scabrous, midvein sparsely, finely glandular-hairy. |
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. |
racemes, simple or 1-branched; immature inflorescence pendent, (globose), axis 0.5–1 cm, 1+ mm diam., sparsely glandular-hairy; bracts not appressed, scalelike, awl-like, 2–5 mm, apex acute, surfaces glandular-hairy. |
Pedicels | 2–7 mm, glabrous or white-hairy. |
3–6 mm, finely glandular-hairy. |
Flowers | corolla mostly pink, conic to urceolate; ovary glabrous or white-hairy. |
corolla white, urceolate; ovary glandular-hairy. |
Fruits | depressed-globose, sometimes subglobose, 7–10 mm diam., glabrous. |
globose, 6–7 mm diam., glabrous. |
Stones | distinct. |
connate into single sphere. |
2n | = 26. |
= 26. |
Arctostaphylos patula |
Arctostaphylos klamathensis |
|
Phenology | Flowering late spring–early summer. | Flowering late spring. |
Habitat | Mountain chaparral and forests | Open, subalpine forests on soils derived from gabbro |
Elevation | 400-3000 m (1300-9800 ft) | 1600-2000 m (5200-6600 ft) |
Distribution |
AZ; CA; CO; MT; NV; OR; UT; WA; Mexico (Baja California)
|
CA |
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.) |
Of conservation concern. Arctostaphylos klamathensis is known from the eastern Klamath Mountains, Siskiyou and Trinity counties. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 8, p. 416. | FNA vol. 8, p. 436. |
Parent taxa | Ericaceae > subfam. Arbutoideae > Arctostaphylos | Ericaceae > subfam. Arbutoideae > Arctostaphylos |
Sibling 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 , | S. W. Edwards: Four Seasons 6(4): 20, figs. 1, 2. (1983) |
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