Arctostaphylos nevadensis |
Arctostaphylos nevadensis subsp. nevadensis |
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pine mat manzanita |
pine-mat manzanita |
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Habit | Shrubs, prostrate or mound-forming, 0.1–0.5 m; burl absent or basal, sometimes epicormic; twigs sparsely short-hairy. | Plants killed by fire; burl absent. | ||||
Leaves | petiole 3–7 mm; blade bright green, shiny, obovate or oblanceolate, 1–3 × 1–1.5 cm, base cuneate, margins entire, plane, surfaces smooth, puberulent, glabrescent. |
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Inflorescences | racemes, simple or 1-branched; immature inflorescence pendent, (branches congested, globose), axis 0.5–1 cm, 1+ mm diam., sparsely short-hairy; bracts not appressed, (green), scalelike, linear or linear-lanceolate, mostly 2–3 mm (some near base leaflike, 5–10 mm), apex acuminate, mucronate, surfaces glabrous or sparsely hairy, rarely finely glandular-hairy. |
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Pedicels | 3–5 mm, glabrous. |
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Flowers | corolla white, urceolate; ovary glabrous. |
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Fruits | (dark brown), globose, 6–8 mm diam., glabrous. |
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Stones | distinct. |
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2n | = 52. |
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Arctostaphylos nevadensis |
Arctostaphylos nevadensis subsp. nevadensis |
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Phenology | Flowering late spring. | |||||
Habitat | High-elevation forests and montane chaparral | |||||
Elevation | (600-)1500-2700 m ((2000-)4900-8900 ft) | |||||
Distribution |
CA; NV; OR; WA
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CA; NV; OR; WA |
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Discussion | Subspecies 2 (2 in the flora). (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Subspecies nevadensis occurs from the North Coast Ranges of California (Del Norte and Humboldt counties) and the Sierra Nevada through the Cascades of Oregon to the Wenatchee Mountains of central Washington. It hybridizes with Arctostaphylos patula. Some botanists have assumed A. parvifolia Howell is of hybrid origin of A. nevadensis × A. glandulosa. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
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Key |
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Source | FNA vol. 8, p. 435. | FNA vol. 8, p. 435. | ||||
Parent taxa | Ericaceae > subfam. Arbutoideae > Arctostaphylos | Ericaceae > subfam. Arbutoideae > Arctostaphylos > Arctostaphylos nevadensis | ||||
Sibling taxa | ||||||
Subordinate taxa | ||||||
Name authority | A. Gray: in A. Gray et al., Syn. Fl. N. Amer. 2: 27. 1878 , | unknown | ||||
Web links |
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