Empalement. Spathe common, oblong, opening sideways.
Blossom one-petalled, 6-cleft.
Chives. Threads six, inserted into the blossom. Tips oblong.
Pointal. Seed-bud oblong, beneath. Shaft simple.
Seed-vessel. Capsule three-locular, three-angled.
Seeds many.
Obs. In some species the seed-bud is above, in others beneath.
SPECIFIC CHARACTER.
Pontederia germine supero: foliis sagittatis, obtusis, vel acutis: floribus umbellatis, confertis, cæruleis.
Habitat in India Orientali.