Japan Flora: Stems 50-100 cm. long, glabrous at base, cobwebby on the branches; radical leaves large, to 65 cm. long; median cauline leaves oblong-lanceolate, 15-30 cm. long, acute to acuminate, dilated at base, broadly clasping, pinnately cleft, the lobes narrow, acuminate, lobulate，short-spined, glabrous on both sides; heads erect at anthesis; involucres campanulate, 1.8-2.8 cm. long, 2.5-35 cm. wide; bracts 7-seriate, usually equal in length, loosely cobwebby, the outer linear; corollas purplish, 19-20 mm. long. Aug.-Sept. Wet places.

Honshu (Ozegahara Moor).