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Equisetum
(redirected from Equisetaceae)

   Also found in: Dictionary/thesaurus, Encyclopedia, Wikipedia 0.01 sec.
Equisetum
genus of the fern ally family Equisetaceae. These plants have a high content of thiaminase, and horses which eat a lot of them, usually in their hay, develop thiamin deficiency. This is characterized by incoordination, falling, bradycardia and severe cardiac irregularity. Response to treatment with thiamin is rapid and complete.
Includes E. arvense, E. hyemale, E. laevigatum, E. limosum, E. palustre, E. ramosissimum. Called also horsetails, foxtails, marestails.


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EQUISETACEAE Michaux ex DeCandolle EQUISETUM Linnaeus Horsetail or Scouring Rush Rhizomes with nodal buds; aerial stems green with whorls of reduced, nonfunctional leaves; internodes hollow; strobili terminal.
And in a subsection labeled Foreign Matter, "that Ephedra Herb does not contain stems of Equisetaceae or Gramineae plants, or any other foreign matter.
 
 
 
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