Melanthium virginicum L.
Gleason, Henry A. & Cronquist, Arthur J. 1991. Manual of vascular plants of northeastern United States and adjacent Canada. lxxv + 910 pp.
Species Description - Stem stout, erect from a thick rhizome, 7–15 dm, hairy above; lvs linear, acuminate, the lower much elongate, often 3 dm, 1–2(–3) cm wide, narrowed at the base; panicle ovoid, 2–3 dm, hairy, its lower branches bearing a raceme of slender-pedicellate fls, the lower fls perfect, the upper staminate; tep spreading, pale green, 6–13 mm, the blade ca twice as long as the claw, flat, oblong or oval or obovate, obtuse, glandular at base; fr ellipsoid, 3-lobed, 10–15 mm; seeds 5–8 mm. Wet woods and meadows; N.Y. to Ind. and Minn., s. to Fla. and Tex. June, July. (Veratrum v.)