Perennial herb. Stem simple, erect, 50-100 m high, glabrous. Leaves sinuate, glabrous, basal and lower cauline leaves long petioled, cordate-reniform, obtuse or subacute, basally cordate, 5-10 x 4-9 cm, petiole 8-16 cm long; upper cauline leaves semiamplexicaul, lanceolate. Capitula short pedunculate, 8-10 in elongated raceme. Involucre campanulate, phyllaries uniseriate, 8-9, imbricate, subulate, acute-acuminate with hyaline margin, 10-13 x 3-4 mm long. Ray florets ligulate, yellow female, 12-16 mm long, 5-7 veined; disc floret tubular, 5-toothed, bisexual, 10-13 mm long, limb 5-6 m long, tube slightly longer than limb. Cypsela oblong, reddish brown, 4-5 mm long. Pappus bristles uniseriate, barbellate, as long as corolla or slightly shorter, 60-80, reddish brown.