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3a.2. Amaranthus Linnaeus (subg. Acnida) sect. Saueranthus Mosyakin & K. R. Robertson, Ann. Bot. Fenn. 33: 277. 1996.
Plants annual, glabrous, glabrescent, or pubescent. Bracts not enfolding flower, not leaflike, narrowly lanceolate to subulate-linear, margins entire, plane or indistinctly undulate at margins. Pistillate flowers: tepals (4-)5, spatulate or obovate-elliptic, sometimes only outer tepals distinctly spatulate. Utricles dehiscence regularly circumscissile (indehiscent only in Amaranthus greggii).
Species 4 (4 in the flora): sw North America.
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