Kingdom: Plantae (2629)
Phylum: Tracheophyta (2532)
Class: Liliopsida (388)
Order: Liliales (109)
Family: Pontederiaceae (5)(family description)
Genus: Heteranthera (1)
Epithet: oblongifolia Mart. ex Schult. & Schult.f. (1)
Synonym: Heteranthera hydrocleifolia Griseb.
oblongifolia => oblong leaves