Pistia L.

1 species native Aust.; Qld, NT

*Pistia stratiotes L.

Floating herb with leaves arranged in a rosette. Leaves alternate, broad-ovate, up to 13 cm long and 8 cm wide, hairy and ribbed. Spathe tubular at base. Spadix 1.5 cm long, white-green. Male zone a whorl of stamens. Female flowers partly fused to spathe. Perianth absent. Fruit a berry. Grows on still or slow moving water. Introd. from N. Aust. Water Lettuce