Family Code: HYDROC Genus Code: LIMNO Genus CN: spongeplant Genus Authority: Rich. Genus Summary: A genus of 1-2 species, of se. North America and tropical America. Genus Identification: Identification notes: This species is often free-floating, the leaves with prominently large cells below. Genus References: Haynes in FNA (2000); Cook in Kubitzki (1998b). Last Updated: 2019-11-29 Publish: 1