Bulb ovoid, 7-10 cm. in diameter; leaves basal, numerous, lorate, gradually acuminate, 3-5 dm. long, 5-7 cm. broad; flowering scape stout, 3-4 dm. long, involucral bracts lance-trigonal, 6-8 cm. long, bearing 4-12 flowers; flowers white, usually deeply tinged with purple without, sessile; perianth tube 15-20 cm. long, very slender, the lobes lanceolate, 7-8 cm. long; stamens greatly exserted, the filaments scarlet or purple.
Wet soil or shallow water, usually at the margins of streams or lakes, chiefly at low elevations, but collected as high as 1,800 metres in Guatemala, possibly only as an escape from cultivation.