Amaranthus arenicola I.M.Johnst.
Gleason, Henry A. & Cronquist, Arthur J. 1991. Manual of vascular plants of northeastern United States and adjacent Canada. lxxv + 910 pp.
Species Description - Dioecious; erect, to 2 m; lvs long-petioled, oblong to lanceolate, 2–8 cm; terminal thyrse 1–4 dm, 1 cm thick, nearly continuous, the lateral ones shorter; bracts 1.5–2.5 mm, mostly shorter than the sep, with heavy, not or scarcely excurrent midvein; male fls with 5 subequal sep, these 2–3 mm, obtuse, apiculate, but the dark midvein not excurrent; female fls with 5 recurved-spatulate sep, the outer 2–2.5 mm, the inner 1.5–2 mm, all emarginate or obtuse, but the outer apiculate; fr 1.5 mm, circumscissile at the middle; style-branches usually 2; seed 1– 1.2 mm, round, dark reddish-brown; 2n=32. Dry, commonly sandy places; w. Mo. to N.D., Mont., and Tex., and intr. in disturbed soil at scattered stations e. to the Atlantic. (A. torreyi, misapplied)