Amaranthus hypochondriacus L.
Gleason, Henry A. & Cronquist, Arthur J. 1991. Manual of vascular plants of northeastern United States and adjacent Canada. lxxv + 910 pp.
Species Description - Cult. ornamental and grain amaranth, apparently derived from A. powellii; infl large and showy, stiffly erect, mostly bright red or bright yellow in life, or sometimes bright green; bracts with rather strong midrib, about equaling the style-branches, these spreading from the thickened base; sep all over 2 mm, nearly equaling the fr, all lanceolate, acute; seeds of ornamental forms generally dark brown, of grain forms mostly pale ivory. Amer. cultigen, originally cult. for grain, now much more commonly so in the Old World than in the New; widely cult. as an ornamental, and occasionally escaping or persistent, but scarcely established in our range.