Lambsquarters

Stems erect to sprawling, simple to much-branched, 1–30 dm, sparsely to densely farinose. Leaves nonaromatic; petiole 1–2.5 cm, shorter than blades or occasionally longer; blade ovate-lanceolate to rhombic-lanceolate or broadly oblong, 1–5.5(–12) × 0.5–3.8(–8) cm, base narrowly to broadly cuneate, margins sinuous-dentate to shallowly serrate or entire, apex acute to subobtuse, farinose abaxially. Inflorescences glomerules or occasionally 1-flowered peduncles 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, keeled, farinose, largely covering fruit at maturity; stamens 5; stigmas 2, 0.2–0.3 mm. Utricles depressed-ovoid; pericarp nonadherent, occasionally adherent, smooth to papillate. Seeds lenticular, margins round, 0.9–1.6 mm diam.; seed coat black, smooth, indistinctly granulate and/or radially grooved, or with faint reticulate-rugose ridges. 2n = 54.