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Chenopodium polyspermum var. acutifolium (Sm.) Gaudich.
Family: Amaranthaceae
Chenopodium polyspermum var. acutifolium image
Plants upright (proximal branches often nearly prostrate). Leaf blades becoming red at maturity, apex usually acute. Inflorescences condensed, spikelike panicles, terminal and axillary. Fruiting summer-fall. Moist disturbed soils, gardens, waste areas, alluvial plains; 10-500 m; introduced; N.B., Ont., Que., Sask.; Maine, Mass., Mich., N.Y., Oreg., Wis.; native to Europe, n Asia; introduced in many other regions of the world.