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quillwort,common name for several species of the plant genus Isoetes, which grow in ponds, slow streams, and swampy places. See LycopodiophytaLycopodiophyta
, division of the plant kingdom consisting of the organisms commonly called club mosses and quillworts. As in other vascular plants, the sporophyte, or spore-producing phase, is the conspicuous generation, and the gametophyte, or gamete-producing phase, is minute.
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The common name for plants of the genus Isoetes.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.