Leaf blades essentially unlobed to lobed ca. 1/4 distance to midrib. Flowering and fruiting spring. Dry flats and slopes, stabilized dunes, washes, sandy or granitic soil; 400-900 m; Ariz., Calif. Argemone corymbosa subsp. corymbosa grows in the Mojave Desert-Panamint Valley area.

STEMS: with 10-15 prickles per square cm of surface, the largest 5-7 mm long. LEAVES: with 5-10 prickles per square em; basal and lower cauline leaves undulate or shallowly lobed one-tenth to one-fifth to the midrib. FLOWERS: with 15-25 prickles per square em; basal and lower cauline leaves undulate or shallowly lobed one-tenth to one-fifth to the midrib. NOTES: See also the parent taxon for further description. Dry washes, sandy soil, desert foothills: sw Yavapai Co. 700 m (2400 ft); May; San Bernardino and Inyo cos., CA. REFERENCES: Ownbey, Gerald B., Jeffrey W. Brasher, and Curtis Clark. 1998 Papaveraceae. J. Ariz. – Nev. Acad. Sci. 30(2): 120.