Equisetum fluviatile L.
Family: Equisetaceae
pipes,  more...
[Equisetum fluviatile f. linnaeanum L.,  more]
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Christopher Noll  
Etymology: Equisetum: Latin for "horsetail" from equus, "horse," and seta, "bristle"
Plants: erect, perennial, to 40" tall, semi-aquatic, emergent aquatic, stem is 80\% hollow; stems hollow, stiff, with vertical ridges, contain much silica, jointed at nodes,; from rhizomes
Leaves: 15-20 pointed, dark brown-black, toothed membrane circling each node
Habitat: moist; marshes, shallows, water less than 40" deep
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Paul Skawinski  
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Theodore S. Cochrane  
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Christopher Noll  
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Emmet J. Judziewicz  
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Aaron_Carlson  
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