Stems often marked with purplish spots or striae. Leaves: petioles mostly 3-7 cm; blades (ultimate venation raised and finely reticulate) mostly 10-20 × 10-20 cm (smaller distally), bases cordate to truncate, faces sometimes initially sparsely hirsute (only bases of hairs remaining at flowering). Phyllaries mostly 4-6 mm. Ray corolla laminae mostly 3-4 × 1.5-2 mm. Disc corollas 6-8 mm, tubes usually glandular-puberulent. Cypselae (1-)2.5 mm; pappi 4-6 mm. 2n = 60.
Flowering late summer-fall. Pine-oak forests, waste places, roadsides; 1200-1800 m; Ariz., N.Mex.; Mexico.