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FOC | Family List | FOC Vol. 23 | Hydrocharitaceae

3. Hydrocharis Linnaeus, Sp. Pl. 2: 1036. 1753.

水鳖属 shui bie shu

Herbs, floating. Stems short, stoloniferous. Leaves basal, floating or submerged, rarely emerged, petiolate and stipulate; blade ovate, orbicular, or reniform, entire, with more than 5 curved veins, sometimes with a central pad of spongy tissue on abaxial surface of floating blade. Plants monoecious; flowers unisexual. Spathes 1- or 2-valved, male spathes pedunculate, 1-6-flowered; female spathes sessile, 1-flowered. Sepals greenish white. Petals white or yellowish, much larger than sepals. Stamens 6-12; anthers 2-thecous. Ovary elliptic; ovules numerous; styles 6, bifid. Fruit with 6 ribs, irregularly dehiscent at apex. Seeds ellipsoid.

About three species: Africa, Asia, Australia, Europe, North America; one species in China.

Lower Taxon


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