Annual, 2-6 dm, roughly stellate-hairy; lvs narrowly oblong to oblong-ovate, 3-7 cm, coarsely serrate, with 1 or 2 large glands at the summit of the petiole; staminate fls with 4 sep, 4 pet, and 7-9 stamens; pistillate fls with 5 sep and no pet, each of the 3 styles bifid nearly to the base; 2n=16. Dry or sandy soil; widespread in trop. and subtrop. Amer., n. to Va., Ind., Io., and Neb., and adventive farther north. Ours have been called var. septentrionalis M
This is undoubtedly a species adventive from the south. It is now found in fallow fields, roadsides, and roadside ditches. Pepoon reports it from the sand flats of Lake and Porter Counties.
Indiana Coefficient of Conservatism: C = 0
Wetland Indicator Status: UPL
Indiana populations belong to var. septentrionalis.