Family Code: ALISMA Genus Code: ECHIN6 Genus CN: burhead Genus Authority: Rich. ex Engelm. Genus Summary: A genus of about 27 species, herbs, primarily of the American tropics and subtropics. Genus References: Lehtonen (2008, 2009)=Z; Haynes & Hellquist in FNA (2000); Lehtonen & Myllys (2008); Haynes, Les, & Holm-Nielsen in Kubitzki (1998b). Last Updated: 2019-11-29 Publish: 1