Nymphaea hastifolia Domin

Annual or perennial; rhizome globose, erect. Leaf lamina broadly elliptic, to 20 cm long, to 15 cm wide, slightly sinuate, glabrous on undersurface; juvenile lamina sagittate. Flowers to 30 cm above water. Sepals 4 or 5, to 6 cm long, acute. Petals to 30, lanceolate, acute, white. Stamens yellow, to c. 100; filaments cylindrical, to 17 mm long; anthers to 5.5 mm long, sometimes with a gland at base; appendage obsolete. Carpels 8–16; sterile stigmatic lobes vestigial or obsolete. Fruit c. 4.5 cm diam. Seeds without longitudinal ridges or proliferations, spherical, c. 1 mm diam., glabrous.

Growing on floodplains in ephemeral pools or in water to 1 m deep.