Stems erect to ascending, unbranched, 2.5–7.5 dm, somewhat viscid and farinose. Leaves nonaromatic; petiole 1–12 cm; blade triangular to broadly hastate, 4.5–10 × 3–9 cm, base truncate, cordate, or hastate, margins entire, apex acute (acuminate), adaxially sparsely farinose. Inflorescences: dense glomerules sessile on terminal and axillary spikes, spikes 5–19 cm; glomerules 3–5 mm diam., flowers developing at about same time; bracts absent. Flowers: perianth segments connate into 0.4–0.6 mm tube, lobes oblong or elliptic, 0.8–1.5 × 0.5–1.1 mm, apex obtuse, rounded or truncate, scarcely abaxially keeled throughout, glabrous, not covering fruit at maturity; stamens (4–)5; stigmas 2–4. Achenes obovoid; pericarp adherent, ± smooth. Seeds obovoid or rotund, 1.5–2 mm in diam. margins not rounded; seed coat black, rugose.
Phenology Fruiting
fruiting early summer–fall
Altitude range
0–200 m;
Distribution
native to mountains of Europe.USA Conn.USA Ill.USA Ky.USA MaineUSA Mass.USA Mich.USA N.J.USA N.Y.USA Pa.USA R.I.Canada Alta.Canada N.B.Canada N.S.Canada Ont.Canada Que.
Discussion
Chenopodium bonus-henricus is widely grown throughout the temperate regions, occasionally escaping.
