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Amaranthus powellii S. Watson. Green Amaranth, Powell's Amaranth. Phen: Jul-Oct. Hab: Disturbed areas. Dist: Native of w. and sc. North America, south to Mexico. Widespread and common in PA (Rhoads & Klein 1993); many earlier reports of A. retroflexus may actually pertain to this species.

Origin/Endemic status: Native

Synonymy: = Ar, C, F, FNA4, G, GrPl, Il, K1, K3, K4, Mex, Mi, Pa, S13, Tx, Bayón (2015); = Amaranthus powellii S.Watson ssp. powellii – Mo2, NE, NY, Costea & Tardif (2003b); = Amaranthus retroflexus L. var. powellii (S.Watson) Boivin; = n/a – RAB

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Heliophily: 9

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