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Project Name Data (Last Modified On 9/19/2013)

Flora Data (Last Modified On 9/19/2013)
Contributor W. G. D'ARCY
Description Submerged aquatic herbs, the stems branching; roots wanting. Leaves ver- ticillate, finely dissected; stipules wanting. Inflorescences solitary or clustered flowers in the leaf axils; pedicels short. Flowers unisexual, minute; perianth of ca. 10 basally united segments, the staminate flowers with ca. 10 subsessile, erect stamens, the 2 thecas oblong, longitudinally dehiscent, the connective enlarged and prolonged; ovary superior, carpel 1, locule 1, ovule 1, pendant, anatropous, the placentation parietal, the style slender. Fruit a nut; seed 1, the embryo straight, endosperm wanting.
Habit herbs
Distribution near cosmopolitan distribution.
Note The plants occur in still fresh water.
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