Plant: Annual herb; STEMS to 45 cm tall Leaves: to 15 cm long, sessile, narrowly elliptic to lanceolate; margins mostly lobed, often with teeth in the sinuses. BRACTS narrowly lanceolate to ovate, green, sometimes with faintly whitish bases, mostly not on ovary; margins entire or few-toothed INFLORESCENCE: cymose Flowers: sessile; petals yellow, 2-5 mm long; staminodia 0; stamens ca. 15-30, all with linear filaments; style 2-4 mm long Fruit: capsules clavate, often long-tapering to base; base not woody; body 8-28 mm long, straight or arched less than 180 degrees. SEEDS pendulous, not winged, those in upper half of capsule grain-like, several-faceted, irregular in cross-section, the angles sharp; testa cells with straight adjoining walls, the surface walls pointed-papillate Misc: Upper elevations of warm deserts to chaparral and Great Basin Desert on a variety of soil types; 300-2250 m (1000-7400 ft); Feb-Jun References: Charlotte Christy - Loasaceae - JANAS 30:96-111. ASU Specimens.