water canna, powdery alligatorflag, Indian bayou, powdery thalia
Thalia dealbata Fraser
T. geniculata L.
Perennial. Emergent, tall. Stem narrow and rhizomatous. Leaves alternate; petiole narrow, sheathed; leaf blade broad ovate-lanceolate, venation pinnate, lateral veins closely spaced and parallel; margin entire. Inflorescence an open, bracteate panicle. Flowers in sessile pairs, zygomorphic; sepals 3, subequal; petals 3, fused at base. Dispersal by seed.
lakes, swamps, and rivers
A genus with six species, with only a few aquatic. Thalia dealbata is the species most commonly cultivated for ponds. Thalia geniculata is slightly smaller than T. dealbata and has characteristic red stems basally.