Corydalis aurea var. occidentalis Engelmann ex A. Gray, Manual ed. 5, 62. 1867; C. curvisiliqua Engelmann subsp. occidentalis (Engelmann ex A. Gray) W. A. Weber; C. montana Engelmann ex A. Gray

Inflorescences : racemes robust, generally exceeding leaves. Flowers : petals crested. Capsules erect at maturity, stout, 12-20 mm. Seeds with narrow marginal ring.

Flowering early spring-late summer. Bottomlands, prairies, plains, foothills, mesas, ditches, railroad embankments, and washes, in loose, often sandy, dry soil; 300-2800 m; Ariz., Colo., Kans., Mo., Nebr., Nev., N.Mex., Okla., S.Dak., Tex., Utah, Wyo.; Mexico (Chihuahua, Durango, Sinaloa, and Sonora).