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Catarino, L. & Martins, E.S. (2010) Pontederiaceae Flora Zambesiaca 13(2) 69-76
Obermeyer, A.A. (1985) Pontederiaceae Flora of Southern Africa 4(2)
Aquatic herbs, rooted or free-floating. Leaves spirally arranged, sheathing at base, often dimorphic: emergent leaves with a long, sometimes swollen, petiole and a spathulate, circular or ovate, cordate or hastate, lamina; submerged leaves linear. Inflorescence racemose or spicate. Bracts 0. Flowers bisexual. Perianth of 6 parts, in 2 series, united in a tube below, petaloid. Stamens (1-)3-6, dimorphic. Ovary superior, (1-)3-locular, with 1-many ovules. Fruit a capsule or nut (Pontederia). Worldwide: 6 genera and 32 species, tropical and warm areas (especially America) with a few in the N temperate zones. Malawi: 3 genera and 3 taxa. |
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| Genus | Content |
| Eichhornia Kunth | Description |
| Heteranthera Ruiz. & Pav. | Description, Image |
| Monochoria C. Presl | Description |
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