Kingdom: Plantae (2715)
Phylum: Tracheophyta (2630)
Class: Liliopsida (397)
Order: Liliales (111)
Family: Pontederiaceae (5)(family description)
Genus: Heteranthera (1)
Epithet: oblongifolia Mart. ex Schult. & Schult.f. (1)
Synonym: Heteranthera hydrocleifolia Griseb.
oblongifolia => oblong leaves