Stem erect, to 13 dm, uncinate-puberulent, as also the axis of the infl; stipules lance-subulate, 2-4 mm, caducous; petiole about as long as the stalk of the terminal lfl; lfls ovate or rhombic-ovate, subglabrous above, strongly reticulate and minutely uncinate-puberulent on the veins beneath; fls 8-10 mm; stipe 2.5-5 mm; articles 2-5, 6-8 mm. Dry, sandy soil; se. Va. to Fla. and Tex. July, Aug. (D. rhombifolium, misapplied)
Gleason, Henry A. & Cronquist, Arthur J. 1991. Manual of vascular plants of northeastern United States and adjacent Canada. lxxv + 910 pp.