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Bulbous herbs. Leaves radical, sessile or subpetiolate. Inflorescences umbellate, many-to 2-flowered, with 2 spathes. Flowers white. Stamens inserted in the throat, basally connected by a thin membrane (false corona) which is entire to deeply incised between the filaments. Ovary with 1-9 ovules near the bottom of each cell; Fruits fleshy, finally rupturing laterally. Seeds spongy, green.


Asia-Tropical, tropical and subtropical America present
About 50 species in tropical and subtropical America, a few cultivated; in Malesia there is one naturalized species.