Difference between revisions of "Pontederia"
Sp. Pl. 1: 288. 1753.
Gen. Pl. ed. 5, 140. 1754.
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|name=Narukila | |name=Narukila | ||
|authority=Adanson | |authority=Adanson | ||
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}} {{Treatment/ID/Synonym | }} {{Treatment/ID/Synonym | ||
|name=Umsema | |name=Umsema | ||
|authority=Rafinesque | |authority=Rafinesque | ||
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}} {{Treatment/ID/Synonym | }} {{Treatment/ID/Synonym | ||
|name=Unisema | |name=Unisema | ||
|authority=Rafinesque | |authority=Rafinesque | ||
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|hierarchy=Pontederiaceae;Pontederia | |hierarchy=Pontederiaceae;Pontederia | ||
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name=Pontederia | name=Pontederia | ||
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|authority=Linnaeus | |authority=Linnaeus | ||
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|publication year=1753;1754 | |publication year=1753;1754 | ||
|special status= | |special status= | ||
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|genus=Pontederia | |genus=Pontederia | ||
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-->[[Category:Treatment]][[Category:Pontederiaceae]] | -->[[Category:Treatment]][[Category:Pontederiaceae]] | ||
Latest revision as of 21:13, 5 November 2020
Herbs, annual or perennial, rooted in mud. Vegetative stems submersed and growing to surface, or rhizomatous. Flowering stems submersed and growing to surface, or emersed and slightly constricted just below first node. Sessile leaves forming basal rosette, blade thin. Petiolate leaves floating or emersed; blade cordate to reniform, apex obtuse to acuminate. Inflorescences spicate, commonly 50 or more-flowered, elongating over many days; spathes folded, apex acute to acuminate; peduncle glandular-pubescent or pilose. Flowers open 1 day only; perianth mauve, blue, or white, funnelform, limb lobes oblong to oblanceolate, glandular-pubescent or pilose, apex obtuse to acuminate; stamens 6, distal 3 shorter than proximal 3; filaments purple, glandular-pubescent; anthers yellow, ovoid to oblong; ovary 3-locular, only 1 developing to maturity; ovule 1; style 1 or more. Fruits utriculate, ovoid, with spinulose, dentate or smooth longitudinal ridges. Seed 1, ovoid, smooth.
Distribution
Western Hemisphere.
Discussion
Species 6 (1 in the flora).