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Genus Sagittaria Family Alismataceae

Description: Rooted emergent aquatic perennials.

Leaves submerged, emergent or floating. Most species monoecious.

Inflorescence mostly erect with 1–8 3-flowered whorls. Flowers mostly unisexual, female flowers in the lower whorls and male flowers in the upper whorls; occasionally the female flowers with a ring of functional or non-functional stamens. Sepals 3, reflexed in male flowers. Petals 3, usually white. Stamens 6–numerous, whorled. Carpels numerous, 1-ovuled; apparently spirally inserted on a swollen, globose or oblong receptacle.

Aggregate fruit a head of nutlets.


Distribution and occurrence: World: c. 20 species, mostly New world. Australia: 3 species (naturalized), Qld, N.S.W., Vic., S.A.

The record of *S. sagittifoilia L. has not been substantiated, it has often been confused with S.montevidensis.

Text by S. W. L. Jacobs
Taxon concept:

 Key to the species 
1Mature emergent leaves linear or lanceolateSagittaria platyphylla
Mature emergent leaves sagittateSagittaria montevidensis

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