3134.000 Aldrovanda L.

Submerged floating aquatic plant, without roots. Stems simple or branched. Leaves in whorls, the lamina articulate, reduced in the flowering whorl. Flowers solitary, axillary, emergent. Sepals and petals 5. Stamens 5. Ovary 5-carpellary; styles 5, free, digitately branched at the apex; ovules on 5 parietal placentas. Capsules with 5 valves; seeds 6–8, ovoid, black.

Worldwide: Species 1, cosmopolitan.

Botswana: 1 taxon.