Chenopodium polyspermum L.
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Authority
Gleason, Henry A. & Cronquist, Arthur J. 1991. Manual of vascular plants of northeastern United States and adjacent Canada. lxxv + 910 pp.
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Family
Amaranthaceae
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Scientific Name
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Description
Species Description - Erect or ascending annual to 1 m; stems 4-angled, lvs green, ovate to elliptic, 2–7 dm, obtuse or subacute, entire or with an obscure tooth at the widest part, rounded or cuneate to a short petiole; infls axillary, loose, cymosely much branched, many-fld, shorter than or equaling the lvs; cal smooth, its 5 apiculate segments rounded on the back; seeds horizontal, shiny- black, 1 mm wide; 2n=18. Native of Eurasia, occasionally found as a weed in our range.