Arctostaphylos purissima |
Arctostaphylos patula |
|
---|---|---|
La Purisima manzanita, La Purissima manzanita |
green-leaf manzanita |
|
Habit | Shrubs, erect, 1–4 m; burl absent; twigs densely short-hairy with longer hairs. | 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. |
Leaves | petiole to 2 mm; blade bright green, shiny, orbiculate-ovate to ± orbiculate, 1–2.5 × 1–2 cm, base auriculate-clasping, margins entire, plane, surfaces smooth, glabrous. |
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. |
Inflorescences | racemes, simple or 1–2-branched; immature inflorescence pendent, (branches dense, concealed by bracts), axis 0.5–1 cm, 1+ mm diam., densely short-hairy with longer hairs; bracts not appressed, (overlapping), leaflike, ovate to lanceolate-ovate, 5–8 mm, apex acute, surfaces glabrous. |
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. |
Pedicels | 3–5 mm, sparsely hairy or glabrous. |
2–7 mm, glabrous or white-hairy. |
Flowers | corolla white, conic to urceolate; ovary glabrous. |
corolla mostly pink, conic to urceolate; ovary glabrous or white-hairy. |
Fruits | depressed-globose, 5–8 mm diam., glabrous. |
depressed-globose, sometimes subglobose, 7–10 mm diam., glabrous. |
Stones | distinct. |
distinct. |
2n | = 26. |
= 26. |
Arctostaphylos purissima |
Arctostaphylos patula |
|
Phenology | Flowering winter–early spring. | Flowering late spring–early summer. |
Habitat | Maritime chaparral on deep, sandy soils | Mountain chaparral and forests |
Elevation | 0-100 m (0-300 ft) | 400-3000 m (1300-9800 ft) |
Distribution |
CA
|
AZ; CA; CO; MT; NV; OR; UT; WA; Mexico (Baja California)
|
Discussion | Of conservation concern. Arctostaphylos purissima is known from hills and mesas near the coast (Burton Mesa) in Santa Barbara County. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
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.) |
Source | FNA vol. 8, p. 434. | FNA vol. 8, p. 416. |
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 | P. V. Wells: Madroño 19: 195. 1968 , | Greene: Pittonia 2: 171. 1891 , |
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