Notes: Distribution: Trop. & S. Africa to N. Australia
Small to medium-sized perennial herbs growing in seasonally wet soil or submerged in temporary pools or similar habitats, rarely in permanent water; leaf-blades and flowers often floating on the surface of the water. Tuber globular to oval or more irregular in shape, usually grey to brown with very numerous roots from upper part Leaves usually with a long petiole and a distinct blade with a few parallel primary veins and numerous transverse secondary veins, but in some species, e.g. A. vallisnerioides, the leaf-blade is linear. Inflorescence with spirally or unilaterally arranged flowers in a loose or dense simple or bifid spike; spathe present, but usually very early caducous. Flowers with white, yellow, mauve or bluish-violet petal-like appendages (tepals), rarely with tepals lacking. Stamens with yellowish or brown anthers often early turning blackish; connnective sometimes protruding into a conical appendage; pollen-grains monosulcate, borne in monads. Ovaries green, blue or lilac. Follicles bottle-shaped with a distinct beak, containing 1–12 rounded to fusiform seeds, which are often prominendy longitudinally ribbed.
WCSP 2014. 'World Checklist of Selected Plant Families. Facilitated by the Royal Botanic Gardens, Kew. Published on the Internet; http://apps.kew.org/wcsp/ Retrieved 2011 onwards
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