Definitions for quillwort

This page provides all possible meanings and translations of the word quillwort

Princeton's WordNet

  1. quillwort(noun)

    any of several spore-bearing aquatic or marsh plants having short rhizomes and leaves resembling quills; worldwide except Polynesia

Wiktionary

  1. quillwort(Noun)

    Any of various simple microphyllous vascular plants, of the family Isoetaceae, that resemble rushes and produce spores.

Webster Dictionary

  1. Quillwort(noun)

    any plant or species of the genus Isoetes, cryptogamous plants with a cluster of elongated four-tubed rushlike leaves, rising from a corm, and containing spores in their enlarged and excavated bases. There are about seventeen American species, usually growing in the mud under still, shallow water. So called from the shape of the shape of the leaves

Freebase

  1. Isoetopsida

    The Isoetopsida is a class of the Lycopodiophyta. All living species belong to the genus Selaginella in the Selaginellales or to Isoetes in the order Isoetales. In the past, members of this group have sometimes been placed in the class Isoetopsida, sometimes in the Selaginellopsida or Lycopodiopsida. There are about 700 species of Selaginella and 140-150 species of Isoetes, with a cosmopolitan distribution but often scarce to rare. Some botanists split Isoetes, separating two South American species into the genus Stylites. Some workers prefer the name Selaginellopsida A.B. Frank 1877, which has priority over the name Isoetopsida; the latter was not published until 1885. However, priority does not apply above the rank of family. Recent articles favor the name Isoetopsida, since Selaginellopsida sometimes is ambiguously used. It may have the same membership as the Isoetopsida described here, or it may include only the order Selaginellales. The most famous group within the Isoetopsida is the "scale trees", which include Lepidodendron. These massive trees flourished in marshlands of the Carboniferous.


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