Arctostaphylos purissima |
Arctostaphylos columbiana |
|
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La Purisima manzanita, La Purissima manzanita |
bristly manzanita, Columbia manzanita, hairy manzanita, redwood manzanita |
|
Habit | Shrubs, erect, 1–4 m; burl absent; twigs densely short-hairy with longer hairs. | Shrubs or trees, erect, 2–5 m; burl absent; twigs densely short-hairy, usually with long, white hairs, often glandular. |
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 4–10 mm; blade dark green, dull, lanceolate-ovate to narrowly oblong-ovate, 4–6 × 2–3 cm, base cuneate to ± rounded, margins entire, plane, surfaces ± papillate, finely scabrous, finely hairy, sparsely glandular-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, 3–8-branched; immature inflorescence pendent, branches ± spreading, axis 1.5–2.5 cm, 1+ mm diam., densely short-hairy, usually with long, white hairs, sometimes glandular; bracts not appressed, (green), leaflike, oblong-lanceolate, 10–18 mm, apex acuminate, surfaces finely glandular-hairy. |
Pedicels | 3–5 mm, sparsely hairy or glabrous. |
2–4 mm, finely glandular-hairy. |
Flowers | corolla white, conic to urceolate; ovary glabrous. |
corolla white, conic to urceolate; ovary densely white-hairy, sometimes sparsely glandular. |
Fruits | depressed-globose, 5–8 mm diam., glabrous. |
depressed-globose, 8–11 mm diam., sparsely hairy. |
Stones | distinct. |
distinct. |
2n | = 26. |
= 26. |
Arctostaphylos purissima |
Arctostaphylos columbiana |
|
Phenology | Flowering winter–early spring. | Flowering winter–early spring. |
Habitat | Maritime chaparral on deep, sandy soils | Chaparral, gaps and margins of conifer forests along coast, sometimes extending inland, open areas around rock outcrops |
Elevation | 0-100 m (0-300 ft) | 0-1000(-1400) m (0-3300(-4600) ft) |
Distribution |
CA
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CA; OR; WA; BC
|
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 columbiana is widespread near the coast from northern California to southern British Columbia; it extends inland along the Columbia River Gorge in Oregon and Washington, and inland in Oregon to the western base of the Cascades. Some variation in twig indument occurs in the prominence of longer, stiff hairs, and in the degree of glandulosity. Some plants along the immediate coast of northern California into Oregon lack the longer hairs and have been distinguished as var. tracyi. Hybrids with A. uva-ursi are low shrubs (0.5–1 m) with intermediate vegetative characters. Referred to as A. ×media Piper, these hybrids have been reported from British Columbia, California, Oregon, and Washington. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 8, p. 434. | FNA vol. 8, p. 425. |
Parent taxa | Ericaceae > subfam. Arbutoideae > Arctostaphylos | Ericaceae > subfam. Arbutoideae > Arctostaphylos |
Sibling taxa | ||
Synonyms | A. columbiana var. tracyi, A. tracyi | |
Name authority | P. V. Wells: Madroño 19: 195. 1968 , | Piper: in C. V. Piper and R. K. Beattie, Fl. N.W. Coast, 279. 1915 , |
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