EcoFlora - Trapa natans

Trapa natans L.
Family: Lythraceae Water-Chestnut [Trapa colchica Albov]	Gleason & Cronquist Resources Vascular plants of NE US and adjacent Canada Stem mainly submersed, to 1 m or more; blades of aerial lvs 2-5 cm wide, sharply serrate above; fls axillary, short-peduncled; pet white, 8 mm; fr 3-4 cm wide, with 4 stout horns; 2n=ca 36, ca 48. Native of Eurasia, established and becoming abundant in the Hudson, Potomac, and Mohawk rivers, and locally elsewhere in our range. June-Sept. Gleason, Henry A. & Cronquist, Arthur J. 1991. Manual of vascular plants of northeastern United States and adjacent Canada. lxxv + 910 pp. ©The New York Botanical Garden. All rights reserved. Used by permission.
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