Monoecious; stamens very numerous, with repeatedly branching filaments; styles 3, united at base, each bifid and plumose; capsule large, 3-lobed, covered with soft prickles; seeds 2, carunculate. Monospecific.
Gleason, Henry A. & Cronquist, Arthur J. 1991. Manual of vascular plants of northeastern United States and adjacent Canada. lxxv + 910 pp.
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