Japan Flora: Stems erect, 35-70 cm. long, nearly simple, narrowly winged, glabrous to pubescent; radical and lower cauline leaves linear-oblanceolate, 15-30 cm. long, short-acuminate, gradually long-attenuate at base to a winged petiole, sparsely mucronate-toothed, or undulatedy mucronate-toothed, loosely hairy above, puberulent on midrib beneath, the upper leaves gradually reduced, linear-lanceolate, slightly clasping to more or less decurrent; heads in groups of 5-9, densely arranged; involucres tubular, 9-11 mm. long, about 6 mm. wide, purplish, cobwebby; bracts loose, 5-seriate, the outer half as long as the inner, ovate-lanceolate, acuminate, the median mucronate-acute, the inner linear, acute; corollas purplish, about 9 mm. long.