Stem solitary, erect, 1-4 dm, generally bearing near the summit several long-petioled lvs and prolonged into a terminal panicle 3-8 dm; stipules narrow, persistent; lateral lfls asymmetrically obovate, acuminate; terminal lfl round-ovate, 7-15 cm, long- acuminate; fls 6-8 mm, purple (white); pedicels 3-8 mm; stamens monadelphous; cal-lobes short; stipe glabrous, 4-12 mm; articles (1)2-3(4), triangular or semi-obovate, 8-12 mm, glabrous on the upper margin. Rich woods; N.S. to Sask., s. to Fla. and Mex. July. (D. acuminatum; D. grandiflorum, misapplied)

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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