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A leafless plant, with hollow and rushlike stems. It is of the genus Equisetum, and is allied to the ferns. See Illust. of Equisetum.

lant of the coal formation, having the general form of plants of the modern Equiseta (the Horsetail or Scouring Rush family) but sometimes attaining the height of trees, and having the stem more or less woody within. See Acrogen, and Asterophyllite.

sed in distemper, and for paper staining. etc. Weale. -- Dutch rush (Bot.), a species of horsetail rush or Equisetum (E. hyemale) having a rough, siliceous surface, and used for scouring and polishing; -- called also scouring rush, and shave grass. See Equisetum. -- Dutch tile, a glazed and painted ornamental tile, f…

Belonging to the Equisetaceæ, or Horsetail family.

A genus of vascular, cryptogamic, herbaceous plants; -- also called horsetails.

Ephedra) of leafless shrubs, with the stems conspicuously jointed; -- called also shrubby horsetail. There are about thirty species, of which two or three are found from Texas to California.

A class of flowerless plants, embracing ferns, horsetails, club mosses, quillworts, and other like plants. See the Note under Cryptogamia. -- Pter"i*do*phyte`, n.

One of various horsetails.