Perennial, from simple and erect and 1-2 dm. high to branched above and 6-8 dm. high, cinereous-puberulent and somewhat villous; leaves oblanceolate to oblong-lanceolate, mostly sinnuate-pinnatifid, 2-8 cm. long, the lower petioled, the upper gradually reduced, more or less sessile; flowers solitary in upper axils, the stem tip and buds erect or nodding; floral tube 1.5-3 cm. long, slightly pubescent within near base; sepals lance-linear, 6-10 mm. long, the tips not over 0.5 mm. long and scarcely if at all corniculate or free; petals yellow, 5-15 mm. long, broadly obovate; filaments slightly flattened, almost as long as petals; style glabrous; stigma lobes linear, 2-6 mm. long; capsule cylindrical, usually somewhat arcuate, divaricate, 1-3 cm. long, 2-3 mm. thick, sessile; seeds ca. 1 mm. long, 0.6 mm. thick, brownish, evenly and regularly pitted.
Damp places. Southwestern United States to Ecuador. To be expected in Panama, although no material seen from there.