Descurainia incana (Bernhardi ex Fischer & C. A. Meyer) Dorn subsp. incisa (Engelmann ex A. Gray) Kartesz & Gandhi; D. incana subsp. viscosa (Rydberg) Kartesz & Gandhi; D. incana var. viscosa (Rydberg) Dorn; D. incisa var. leptophylla (Rydberg) O. E. Schulz; D. incisa subsp. viscosa (Rydberg) Rollins; D. incisa var. viscosa (Rydberg) G. A. Mulligan; D. richardsonii O. E. Schulz subsp. incisa (Engelmann ex A. Gray) Detling; D. richardsonii var. sonnei (B. L. Robinson) C. L. Hitchcock; D. richardsonii subsp. viscosa (Rydberg) Detling; D. richardsonii var. viscosa (Rydberg) M. Peck; D. rydbergii O. E. Schulz; D. serrata (Greene) O. E. Schulz; Hesperis incisa (Engelmann ex A. Gray) Kuntze; Sisymbrium incisum var. sonnei B. L. Robinson; S. leptophyllum (Rydberg) A. Nelson & J. F. Macbride; S. serratum (Greene) Tidestrom; S. viscosum (Rydberg) Blankinship; Sophia glandulifera Rydberg; S. incisa (Engelmann ex A. Gray) Greene; S. leptophylla Rydberg; S. purpurascens Rydberg; S. serrata Greene; S. sonnei (B. L. Robinson) Greene; S. viscosa Rydberg

Plants glandular or eglandular, not canescent. Basal leaves: lateral lobes (3-)5-9 pairs, margins usually coarsely dentate to incised, rarely crenate or pinnatifid. Cauline leaves: lobes oblong to lanceolate, margins dentate to denticulate. Racemes glandular or eglandular. Fruiting pedicels ascending to divaricate, (3-)5-10(-12) mm. Fruits straight or curved inward. 2n = 14.

Flowering late Jun-Aug. Alpine, stream banks, disturbed sites, roadsides, meadows, sagebrush and juniper communities, open woods, rocky cliffs, sandy areas, talus slopes; 900-2900 m; Alta., B.C., Yukon; Ariz., Calif., Colo., Idaho, Mont., Nev., N.Mex., Oreg., Utah, Wash., Wyo.; Mexico (Chihuahua, Coahuila).