Stems glabrous, sparsely hairy, occasionally densely hairy (not cobwebby), usually slender, occasionally more robust, 2-4.5 mm in diameter, rigid, lined. Leaves reniform, distinctly-(to rarely shallowly-)lobed, infrequently with lateral pinnae, 8-48 x 11-67 mm, glabrous above (rarely hairy), glabrous or sparsely or rarely densely hairy below, especially on veins and at base of lamina, trichomes multi-celled with tapering base and apical appendage; petiole 6-72 mm long, glabrous or sparsely hairy, thickly cobwebby axils and buds, auricles vary from tiny (or absent) to large, auriform. Capitula small to medium, few (4-12) to many (c. 100) on fairly short peduncles (2-28 mm long). Involucral bracts (5-)8(rarely 10-13), 3-4(-5) mm long, glabrous (rarely hairy), calyculate. Rays (3-)5(-8), 5-10.5 mm long. Disc florets 7-26; corolla 3-5 mm long. Cypselae obovate, ciliate and hairy or sparsely hairy on faces, brown, margined or narrow winged, 2.0-3.2 mm long when mature.
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