Pontederia is a genus of heterostyly , members of which are commonly known as pickerel weeds. Pontederia is endemic to the Americas, distributed from Canada to Argentina, where it is found in shallow water or on mud.
Pontederia plants have large waxy leaves, succulent stems and a thick pad of fibrous roots. The roots give rise to that allow rapid colonization by vegetative reproduction. Species are Perennial plant, and produce a large spike of flowers in the summer. There is a species of bee ( Dufourea novaeangliae) that exclusively visits Pontederia cordata;
Pontederia cordata and Pontederia crassipes (formerly known as Eichhornia crassipes), have become invasive in many tropical and temperate parts of the globe, but are, on the other hand, efficient biological filters of Water pollution in constructed wetlands.
Species
, Plants of the World Online accepted the following species:
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Pontederia africana (Solms) M.Pell. & C.N.Horn
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Pontederia australasica (Ridl.) M.Pell. & C.N.Horn
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Pontederia azurea Sw.
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Pontederia brevipetiolata (Verdc.) M.Pell. & C.N.Horn
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Pontederia cordata L.
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Pontederia crassipes Mart.
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Pontederia cyanea (F.Muell.) M.Pell. & C.N.Horn
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Pontederia diversifolia (Vahl) M.Pell. & C.N.Horn
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Pontederia elata (Ridl.) M.Pell. & C.N.Horn
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Pontederia gigantea D.J.Sousa
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Pontederia hastata L.
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Pontederia heterosperma (Alexander) M.Pell. & C.N.Horn
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Pontederia korsakowii (Regel & Maack) M.Pell. & C.N.Horn
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Pontederia meyeri (A.G.Schulz) M.Pell. & C.N.Horn
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Pontederia natans P.Beauv.
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Pontederia ovalis Mart. ex Schult. & Schult.f.
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Pontederia paniculata Spreng.
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Pontederia paradoxa Mart. ex Schult. & Schult.f.
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Pontederia parviflora Alexander
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Pontederia plantaginea Roxb.
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Pontederia reflexa D.J.Sousa
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Pontederia rotundifolia L.f.
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Pontederia sagittata C.Presl
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Pontederia subovata (Seub.) Lowden
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Pontederia triflora (Seub.) G.Agostini, D.Velázquez & J.Velásquez
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Pontederia vaginalis Burm.f.
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Pontederia valida (G.X.Wang & Nagam.) M.Pell. & C.N.Horn
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