Home
Erect herb to 80 cm high, annual. Stems with dense sessile and stalked stellate trichomes. Indumentum silver. Stipules linear, 2–3 mm long, entire. Leaf lamina lanceolate-ovate, oblong to ovate, 18–55 mm long, 9–25 mm wide; base cuneate to truncate; margins entire to weakly sinuate; tip acute to rounded; venation palminerved with 3 veins at base and 3–5 lateral veins per side of midrib; tertiary reticulate veins obscure; lower surface silver, venation weakly visible, with dense stellate trichomes; extrafloral nectaries absent. Male flowers: pedicels 1.8–2.5 mm long; sepals obovate, c. 1.6 mm long; petals oblanceolate, 1.6–2.2 mm long; stamens 10–12. Styles 3, multifid, divided thrice. Fruit trilobate, globose, 7–9 mm long, 7–9 mm diam., with dense sessile and stalked stellate trichomes.
Annual, to 1 m, sparingly and somewhat umbellately branched above; lvs narrowly triangular to oblong, lanceolate, or ovate-oblong, 4–10 cm, the principal ones with the blade rounded at base and less than twice as long as the petiole; fls in dense terminal infls 1–3 cm; staminate fls with 5 sep, 5 pet, and 10–14 stamens; pistillate fls apetalous, the 6–10 sep accrescent to 1 cm; styles 3, each 2–3 times dichotomous, the stigmas thus 12–24; 2n=20. Dry, usually sandy soil and waste places; O. to Ind. and Neb., s. to Fla. and Tex. Ours are var. capitatus.
