Stem herbaceous, stout, erect, densely leafy, terete, striate, minutely ashen-tomentose. Leaves alternate, petiolate, membranous, ovate-oblong -elliptical or lanceolate, acute base narrowed into the petiole, unequally acutely dentate serrate, nearly glabrous above, paler and thinly tomentose or at length glabrate beneath, 3–6 in. long, 1 1/2–2 1/2 in. broad; petiole 1 in. or less, dilated at base. Capitula hemispherical, about 1/2 in. diameter, on short unequal pedicels, in corymbose terminal panicles 1/2 ft. wide more or less. Scales of involucre multiseriate, outer herbaceous, linear-subulate, inner oblong or lanceolate, all finely attenuate at apex, terminating in a long filiform tail, loose patent or inner at length recurved, pubescent-tomentose externally. Receptacle flat, areolate, glabrous. Corolla-tube slightly but distinctly dilated above. Anther-tips lanceolate, base shortly and obtusely produced. Achenes 10-ribbed, not setulose, with glandular-papillose intervals, callus-based. Pappus uniseriate bar-bellate tawny caducous.
