Stems erect to ascending or prostrate, much-branched, 0.1–6 (–8) dm, glabrous. Leaves nonaromatic; petiole 0.05–0.45 cm; blade triangular to rhombic, 1–9 × 1–6 cm, base cuneate, margins dentate or entire, apex obtuse to acute. Inflorescences lateral glomerules sessile on lateral branched spikes; glomerules subglobose, 2–5 mm diam.; bracts linear, 0.4–2 cm. Flowers: perianth segments 3 or 4, usually connate only at base; lobes lanceolate to elliptic, 0.8–1 × 0.4–0.8 mm, membranaceous, apex broadly acute to rounded, occasionally deeply retuse, rounded or occasionally keeled, glabrous, green and covering fruit at maturity; stamens 2–3; stigmas 2, 0.1 mm. Utricles ovoid; pericarp nonadherent, reticulate-punctate. Seeds vertical and occasionally horizontal, ovoid, 0.6–1 (–1.2) mm diam., margins rounded; seed-coat reddish-brown, smooth. 2n = 18.

Distribution

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• Legacy Map

Alta., B.C., Man., N.B., N.S., N.W.T., Ont., Que., Sask., Yukon, Alaska, Ariz., Calif., Colo., Conn., Idaho, Ill., Iowa, Kans., Maine, Mass., Mich., Minn., Mo., Mont., N.Dak., N.H., N.J., N.Mex., N.Y., Nebr., Nev., Ohio, Oreg., Pa., R.I., S.Dak., Utah, Wash., Wis., Wyo., Europe

Discussion

Varieties 2 (2 in the flora).

Selected References

None.

Lower Taxa

Chenopodium rubrum var. humile, Chenopodium rubrum var. rubrum

Key

1	Vertical seeds 0.6-0.8(-1) mm diam.; stems erect or ascending, 1.5-6(-8) dm; leaf blade margins deeply dentate	Chenopodium rubrum var. rubrum
1	Vertical seeds 0.8-1(-1.2) mm diam.; stems prostrate or spreading, 0.1-1.8 dm; leaf blade margins entire or shallowly dentate	Chenopodium rubrum var. humile

"narrower" is not a number."dm" is not declared as a valid unit of measurement for this property."dm" is not declared as a valid unit of measurement for this property.