Perennial herb, 30-50 cm high. Leaves more or less crowded, sessile, 4-7 cm long, 1-2 mm wide, oblong, tapering towards base, apex acute, nerves impressed above, prominent beneath, covered with patent bristles on both sides. Stamens 5, anthers nearly sessile, oblong. Fruit breaking up into 2 two-loculate carpels, with membranous pericarp, glabrous, with 2 longitudinal grooves, 3 mm high.
Asia-Tropical: Jawa (Jawa cultivated), South America present, near Bogor present
South America. Now widespread in tropical regions; Malesia: Java, formerly cultivated, now as an escape near Bogor (according to Backer & Bakhuizen f., I.c.).