Erect herb or shrub to 4 m tall, sparingly branched; the leaves, involucral bracts, corolla, and styles bearing short-stalked capitate glands; stems terete, faintly striate, brown. Leaves alternate; blades broadly ovate with a large dentation on each side, to 17 cm long and 15 cm wide, the lower leaves as much as 25 cm long and 24 cm wide, the margins serrate, the apex short-acuminate, the second or third pair of the secondary veins usually prominent and strongly ascending from-near the basal fourth of blade; petioles 3-7 cm long, not winged. Inflorescence a thyrsoid panicle, to 25 cm long and 10 cm wide. Heads numerous, 5-6 mm high with ca. 25 florets; involucral bracts ca. 15, oblong-lanceolate, with a few costae, the apex usually obtusely pointed, pubescent; receptacle highly convex, with a dense tuft of hairs; corolla white, 3.5 num long, narrowly funnelform, the lobes broadly triangular, ca. 0.4 mm long and wide. Achenes ca. 1.8 mm long with some short bristles on the upper part; pappus of 25-30 bristles, ca. 3 mm long, the tips not dilated.
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