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Isoëtes tennesseensis (Isoëtaceae), an Octoploid Quillwort from Tennessee

Publication Type:Journal Article
Year of Publication:2003
Authors:N. T. Luebke, Budke J. M.
Journal:American Fern Journal
Pagination:184 - 190
Date Published:2003///

Isoëtes tennesseensis, an octoploid species with a chromosome count of 2n = 88, is described. It occurs in the Hiwassee River in Tennessee. Past collections of this species have been misidentified as Isoëtes macrospora (= I. lacustris). Isoëtes tennesseensis differs from I. lacustris in chromosome number, megaspore and microspore morphology and distribution. Speculation on the origin of this new species is presented.

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