quillwort

[kwil-wurt, -wawrt]
|

noun

any fernlike, aquatic marsh plant of the genus Isoëtes, characterized by clustered, quill-like leaves bearing sporangia in their bases.

Origin of quillwort

First recorded in 1780–90; quill + wort2
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for quillwort

Historical Examples of quillwort

  • Professor Lang has published the first of a series of communications describing the structure of the Quillwort, Isoetes.


British Dictionary definitions for quillwort

quillwort

noun

any aquatic tracheophyte plant of the genus Isoetes, with quill-like leaves at the bases of which are spore-producing structures: family Isoetaceae, phylum Lycopodophyta (club mosses, etc)
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012