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REESTABLISHMENT OF STENOGONUM NUTT. (POLYGONACEAE)

James L. Reveal and Barbara J. Ertter
The Great Basin Naturalist
Vol. 36, No. 3 (September 30, 1976), pp. 272-280
Stable URL: http://www.jstor.org/stable/41711525
Page Count: 9
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Since scans are not currently available to screen readers, please contact JSTOR User Support for access. We'll provide a PDF copy for your screen reader.
REESTABLISHMENT OF STENOGONUM NUTT. (POLYGONACEAE)
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Abstract

The genus Stenogonum Nutt. (Polygonaceae) is reestablished and distinguished from Eriogonum Michx. with which it has been synonymized since 1853. The genus, as outlined here, differs from Eriogonum in having two whorls of three foliaceous bracts surrounding the flowers instead of the normal, united tubular involucre. Stenogonum contains two species, S. flexum and S. salsuginosum; they are restricted primarily to the Colorado Plateau of Wyoming southward through eastern Utah and western Colorado to northwestern New Mexico and adjacent northern Arizona. Both species are illustrated and their respective ranges mapped.

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