Distribution: Introduced in much of North America; British Columbia to California in the West.
Habitat: Weed of roadsides and waste areas.
Flowers: June - September
Growth Duration: Annual
Conservation Status: Not of concern
Erect, simple to freely-branched annual, 2-15 dm. tall, glabrous except in the inflorescence.
Leaves alternate, the blades thin, broadly deltoid-ovate to ovate, up to 20 cm. long, acuminate at the tip and rounded to nearly cordate at the base, the margins wavy, with 2-4 rounded-triangular teeth; the upper leaves reduced and nearly entire, all narrowed abruptly to short, slender petioles.
Flowers sessile, glomerate in large, terminal panicles, sometimes also in reduced lateral spikes or panicles, all often glandular; perianth 5-cleft nearly to the base, the segments ovate to oblong, not strongly keeled; stamens 5, opposite the perianth parts; styles 2.
Utricle 1.5-2 mm. long, the wall adherent to the seed.