Fls naked, borne singly in sessile, axillary, tubular spathes; stamens 2(-7), on one side of the ovary, their filaments united more than half length; staminodes 2, short, linear; ovary short-stipitate, the stipe elongating and elevating the 10-ribbed capsule on an evident pedicel; valves of the fr 2, one persistent, the other deciduous. 17, mainly tropical New World.
Gleason, Henry A. & Cronquist, Arthur J. 1991. Manual of vascular plants of northeastern United States and adjacent Canada. lxxv + 910 pp.