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Genus Pistia Family Araceae

Description: Floating aquatic herb.

Leaves simple, alternate, congested; petiole much shortened.

Inflorescence much reduced. Spathe tubular in lower part, opening above. Spadix partly fused to spathe. Female zone reduced to a single naked pistil. Male zone free. Appendix absent. Tepals absent.

Fruit a few–many-seeded berry.


Photo © ANBG

Distribution and occurrence: World: 1 species, pantropical with some subtropical extensions. Australia: 1 sp (native of northern Australia)

Text by A. Hay
Taxon concept:

One species in NSW: Pistia stratiotes

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