"Araceae" . . "Alismatales" . . . "Magnoliophyta" . . . . . "Liliopsida" . . . "Pond Bogmat" . . "Wolffiella welwitschii (Hegelm.) Monod" . "Plantae" . "Wolffiella welwitschii" . . . . "(Hegelm.) Monod" . "Wolffiella" .