Arctostaphylos purissima |
Arctostaphylos manzanita |
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La Purisima manzanita, La Purissima manzanita |
common manzanita, whiteleaf manzanita |
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Habit | Shrubs, erect, 1–4 m; burl absent; twigs densely short-hairy with longer hairs. | Shrubs or trees, erect, 2–8 m; burl absent or prominent, globose; twigs glabrous, sparsely short-hairy, or glandular-hairy. | ||||||||||||||||||||
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 6–12 mm; blade bright green or glaucous, shiny or dull, widely ovate or oblong-ovate to obovate, 2–5 × 1–3.5 cm, base rounded to ± cuneate, margins entire, plane, surfaces smooth or scabrous, puberulent or veins finely hairy. |
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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, 3–7-branched; immature inflorescence ± abruptly deflexed, branches spreading, axis 1.5–4.5 cm, 1+ mm diam., glabrous, sparsely short-hairy, or sparsely glandular-hairy, not viscid; bracts not fully appressed, scalelike, deltate, 2–4 mm, apex mucronate or acuminate, surfaces glabrous or sparsely hairy to finely glandular-hairy. |
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Pedicels | 3–5 mm, sparsely hairy or glabrous. |
3–8 mm, glabrous. |
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Flowers | corolla white, conic to urceolate; ovary glabrous. |
corolla white, conic to urceolate; ovary glabrous or minutely stipitate glandular-hairy. |
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Fruits | depressed-globose, 5–8 mm diam., glabrous. |
depressed-globose, 8–12 mm diam., hairy or glabrous, stipitate-glandular or smooth. |
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Stones | distinct. |
distinct, sometimes connate. |
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2n | = 26. |
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Arctostaphylos purissima |
Arctostaphylos manzanita |
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Phenology | Flowering winter–early spring. | |||||||||||||||||||||
Habitat | Maritime chaparral on deep, sandy soils | |||||||||||||||||||||
Elevation | 0-100 m (0-300 ft) | |||||||||||||||||||||
Distribution |
CA
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CA
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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.) |
Subspecies 6 (6 in the flora). Arctostaphylos manzanita is usually found in northern California in oak woodlands, chaparral, and open conifer forests. Subspecies manzanita is widespread throughout the Sierra Nevada foothills, north through the Cascades, and at lower elevations in the North Coast Ranges. The other subspecies are generally narrowly distributed. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
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Key |
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Source | FNA vol. 8, p. 434. | FNA vol. 8, p. 437. | ||||||||||||||||||||
Parent taxa | Ericaceae > subfam. Arbutoideae > Arctostaphylos | Ericaceae > subfam. Arbutoideae > Arctostaphylos | ||||||||||||||||||||
Sibling taxa | ||||||||||||||||||||||
Subordinate taxa | ||||||||||||||||||||||
Name authority | P. V. Wells: Madroño 19: 195. 1968 , | Parry: Bull. Calif. Acad. Sci. 2: 491. 1887 , | ||||||||||||||||||||
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