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High-Elevation Cliffs and Outcrops of the Southern Appalachians: Vascular Plants and Biogeography

Susan K. Wiser
Castanea
Vol. 59, No. 2 (Jun., 1994), pp. 85-116
Published by: Allen Press on behalf of the Southern Appalachian Botanical Society
Stable URL: http://www.jstor.org/stable/4033723
Page Count: 32
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High-Elevation Cliffs and Outcrops of the Southern Appalachians: Vascular Plants and Biogeography
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Abstract

Vascular plants of high-elevation cliffs and rock outcrops were sampled on 42 peaks in the Southern Appalachians. Species found were predominantly native, summer-flowering, herbaceous perennials. Species endemic to the Southern and Central Appalachians comprise over 25% of the total flora; species restricted to eastern North America include nearly 50% of the flora. The diversity of biogeographic affinities shows that the northern alpine element (those species found above treeline in the Northern Appalachians) is only a small subset of the total flora. At least 17% of species were likely components of the Pleistocene alpine flora. An annotated checklist of the 288 species is provided.

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