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Mt. Tamalpais Manzanita

Arctostaphylos hookeri subsp. montana (Eastw.) P. V. Wells

Comprehensive Description

provided by North American Flora
Uva-ursi montana (Eastw.) Abrams
Arctostaphylos montana Eastw. Proc. Calif. Acad. III. 1: 83. 1897.
A low spreading shrub, 1 m. or less high, with nearly smooth reddish-brown bark and hoary tomentose branchlets; leaf -blades ovate, obovate, or broadly elliptic, 15-25 mm. long, obtuse or acutish and prominently apiculate at the apex, coriaceous, dull-green and more or less tomentose; petioles 3-4 mm. long, tomentose; flowers in short spike-like simple or fewbranched racemes; rachis densely tomentose; bracts triangular, 3 mm. long, tomentose below the middle, the upper half nearly or quite glabrous, brown and deciduous; pedicels 4—5 mm. long, glabrous; calyx-lobes ovate, pubescent on the margins; corolla 6-7 mm. long; ovary conic, glabrous; nutlets irregularly coalescent, rounded on the back and faintly ribbed, otherwise nearly smooth.
Type locality: Mt. Tamalpais, Marin County, California. Distribution: Coast ranges of central California.
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bibliographic citation
John Kunkel Small, NathanieI Lord Britton, Per Axel Rydberg, LeRoy Abrams. 1914. ERICALES, CLETHRACEAE, LENNOACEAE, PTROLACEAE, MONOTROPACEAE, ERICACEAE, UVA-URSI. North American flora. vol 29(1). New York Botanical Garden, New York, NY
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Arctostaphylos montana

provided by wikipedia EN

Arctostaphylos montana is a species of manzanita. It is endemic to the San Francisco Bay area where it has been found on Mount Tamalpais and at the Presidio of San Francisco.

Taxonomy

Arctostaphylos montana has two subspecies, both of which were formerly considered as a subspecies of Hooker's manzanita until reclassified following modern genetic analysis and comparisons.[2]

  • Arctostaphylos montana subsp. montana Eastw. - Mt. Tamalpais manzanita - native to Mount Tamalpais
  • Arctostaphylos montana subsp. ravenii (P.V.Wells) V.T.Parker, M.C.Vasey & J.E.Keeley - Presidio manzanita - one single plant and a few clones exist at the Presidio of San Francisco. Federally listed as an endangered subspecies of the United States.

References

  1. ^ "Pallid Manzanita". wildlife.ca.gov. Retrieved 2022-12-31.
  2. ^ Parker, V. Thomas; Vasey, Michael C.; Keeley, Jon E. (2007). "Taxonomic Revisions in the Genus Arctostaphylos (Ericaceae)". Madroño. 54 (2): 148–155. doi:10.3120/0024-9637(2007)54[148:TRITGA]2.0.CO;2. JSTOR 41425696. S2CID 43442173.
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Arctostaphylos montana: Brief Summary

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Arctostaphylos montana is a species of manzanita. It is endemic to the San Francisco Bay area where it has been found on Mount Tamalpais and at the Presidio of San Francisco.

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