Chenopodium L.
Stamens 4–5 Chenopodium
Plants erect
Leaves mealy-white, sinuately toothed, 3–6 cm long, ovate to rhomboidal (upper leaves lanceolate, entire). Stems angular, ribbed. Flowers in a terminal spreading panicle. Annual 1–2 m high. Widespread. Weed of cultivation and waste places. Introd. from temp. and trop. areas. Fl. chiefly winter. Fat-hen Chenopodium album
Leaves green, glandular-pubescent, lanceolate, sinuate-toothed or almost entire. up to 8 cm long. Flowers in short terminal spikes. Annual or perennial up to 80 cm high with an odour of ants. Widespread. Weed. Introd. from America. Fl. summer. Mexican Tea Chenopodium ambrosioides