water hyacinth

water hyacinth


Definition of WATER HYACINTH

:  a showy floating aquatic herb (Eichhornia crassipes) of tropical South America that has become naturalized in warm regions (as of the southern United States) often clogging waterways

First Known Use of WATER HYACINTH

circa 1890

water hyacinth

noun    (Concise Encyclopedia)

Common water hyacinth (Eichhornia crassipes)—W.H. Hodge

Any of about five species of aquatic plants that make up the genus Eichhornia of the pickerelweed family (Pontederiaceae). They are native mainly to the New World tropics. Some species float in shallow water; others are rooted in muddy streambanks and lakeshores. All have slender rootstocks, feathery roots, rosettes of stalked leaves, and flowers arranged in spikes or clusters. The common water hyacinth (E. crassipes) is the most widespread. The leafstalk is spongy and inflated, and the upper lobes of its purple flowers have blue and yellow markings. It reproduces quickly, often clogging slow-flowing streams. It is used as an ornamental in outdoor pools and aquariums.


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