| General Information |
| Distribution | Pantropical.In the Hawaiian Islands,
naturalized on
Kaua`i, O`ahu, Moloka`i, Maui, Hawai`i.
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Habit
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Free-floating, aquatic herbs, spreading by stolons.
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Leaves
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Leaves pale green, simple, rosulate, obovate to oblong-cuneate, 3-15 cm long, 1.5-8 cm wide, broadest at apex, with 5-7 conspicuous parallel nerves, villous, apex broadly rounded to truncate or often emarginate, base cuneate to attenuate, sessile.
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Flowers
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Inflorescences inconspicuous, axillary; spathe white, pubescent externally, glabrous within, the tube ovoid, the limb ovate, acute at apex; spadix white, minute, included, bearing 2-8 staminate flowers and a solitary pistillate flower.
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Fruit
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Berries ovoid to ellipsoid, with persistent stigma.
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Seeds
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Seeds numerous, cylindrical, sessile.
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Chromosomes
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2n = 28
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