Photographer: Emmet J. Judziewicz
Equisetum fluviatile L.
pipes, river horsetail, water horsetail
Equisetum: Latin for "horsetail" from equus, "horse," and seta, "bristle"
fluviatile: from a river
|Plant: ||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|
|Leaf:||15-20 pointed, dark brown-black, toothed membrane circling each node|
|Habitat: ||moist; marshes, shallows, water less than 40" deep|
|Notes: ||genus dates from 300 million year ago|