in J. Lamarck and A. P. de Candolle, Fl. Franç. ed. 3, 6: 372. 1815.
Stems erect to ascending, usually much-branched, 0.2–0.7 (–10) dm, densely farinose. Leaves nonaromatic; petiole 0.5–2 (–3) cm, shorter than or equaling leaf-blades; blade ovate to rhombic-ovate, 1–3.5 (–4.5) × 1–3 (–4) cm, base broadly cuneate to abruptly truncate, distinctly 3-lobed, margins dentate to ± entire, apex obtuse (rarely subacute), grayish, usually densely farinose on both surfaces. Inflorescences glomerules in terminal and lateral compound spikes, 2–19 cm; glomerules subglobose, 3–4 mm diam.; bracts absent. Flowers: perianth segments 5, distinct nearly to base; lobes ovate, ca. 1 × 1.1 mm, apex obtuse, densely farinose, keeled, covering fruit at maturity; stamens 5; stigmas 2, 0.2 mm. Utricles depressed-ovoid; pericarp nonadherent, smooth to indistinctly granulate. Seeds lenticular to compressed-subglobose, 0.8–1.25 mm diam.; seed-coat black, smooth or faintly reticulate. 2n = 54.
Phenology: Fruiting late summer–fall.
Habitat: Disturbed soils in open habitats
Elevation: 0-200 m
Introduced; Ont., Ill., Ind., Md., N.C., Pa., native s Europe, occasionally in other parts of the world
Many previous reports of Chenopodium opulifolium in North America were based on misidentifications. Determining its present occurrence and exact distribution in the New World requires special study.
"narrower" is not a number."thick" is not a number."dm" is not declared as a valid unit of measurement for this property.