Chenopodium polyspermum var. acutifolium
Fl. Helv. 2: 259. 1828.
Plants upright (proximal branches often nearly prostrate). Leaf-blades becoming red at maturity, apex usually acute. Inflorescences condensed, spikelike panicles, terminal and axillary.
Phenology: Fruiting summer–fall.
Habitat: Moist disturbed soils, gardens, waste areas, alluvial plains
Elevation: 10-500 m
Introduced; N.B., Ont., Que., Sask., Maine, Mass., Mich., N.Y., Oreg., Wis., native to Europe, n Asia, in many other regions of the world
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