Herbs, to 50 cm tall, rhizomatous, glabrous to scurfy, the hairs short, white, branched or stellate, often mixed with longer, tangled hairs (especially on stems, peduncles, and calices).  LEAVES linear, lanceolate, narrowly elliptic, or oblanceolate, 1.5–8 cm long, the margins minutely undulate to pinnately lobed and often densely hairy, membranous to subcoriaceous, the midvein prominent; apex acute to rounded-obtuse, tapering to an attenuate, subsessile base.  INFLORESCENCES uniflorous, the peduncles 1–3 cm long.  FLOWERS with calyx 2.5–6.0 mm long, densely stellate-pubescent; corolla ca. 1 cm wide, the white cushion-like pads contiguous (or nearly so) and almost filling the throat; stamens less than 6 mm long; anthers ca. 1/3 as long as filaments.  FRUITS 4–8 mm wide, whitish, pendulous; seeds light brown, alveolate.  ––Weedy, found, especially in disturbed areas, dry grasslands, and deserts; all cos. except La Paz; 200–2100 m (700–6900 ft); Mar–Oct; sw U.S. and n Mex.