Leaf blades deltate or rhombic, 2 -3.5 cm, 3-lobed, terminal lobe elongate, margins toothed, parallel to near apex. Inflorescences erect, with leafy bracts. Styles base without yellow area. Seeds 1-1.3 mm diam.
Fruiting Aug-Sep. Fields and waste places, gravel bars, sandy dry river bottoms; 0-2000 m; Ariz., Calif., Nev., N.Mex., Okla., Oreg., Tex.