Plant: perennial herb; stems to 150 cm tall, producing branches mostly along their upper half Leaves: to 15 cm long, to 2 cm wide, sessile, narrowly elliptic to lanceolate; margins shallowly toothed; upper leaves with prominently clasping bases INFLORESCENCE: cymose Flowers: pedicellate, with (0-)2-6 lanceolate, several-toothed to -lobed bracts, these mostly arising from the ovary; petals white, but drying pale yellow, 25-50 mm long, 5-12 mm wide, with trichomes at apex only; staminodia 5, equal to the petals; stamens with broad filaments common in several outer whorls; style 15-30 mm long; stigmatic papillae inconspicuous Fruit: capsules cylindric, (15-)20-30 mm long. SEEDS horizontal, winged, oval to obovate, flattened; testa cells with straight to curved adjoining walls, the surface walls with 3-5 bumps Misc: On various substrates, especially roadsides; 1850 m (6000 ft); Aug-Sep REFERENCES: Christy, Charlotte M. 1998. Loasaceae. J. Ariz. – Nev. Acad. Sci. 30(2): 96.