Novelo R., A. and A. Lot H. 1994. Rooted, emergent, floating or submersed. Stems short, with leaves basal, often rhizomatous, sometimes producing corms at tips.
Juvenile leaves linear-subulate.
Adult leaves linear-subulate, to linear and submersed, or petiolate and floating or emergent, blades linear to linear lanceolate to ovate, base sagittate, hastate, cordate or attenuate. Infl. often compound with whorls of branches, sometimes simple, rarely umbelliform or solitary fls. Sepals 3, persistent. Revizion of the genus Echinodorus Rich. Rooted, emergent or stranded on wet margins.