Japan Flora: Leaves obovate-oblong, about 30 cm. long, 5-7.5 cm. wide, ob­tuse, pinnately cleft; scapes many, somewhat shorter than the leaves at anthesis, much elongate after anthesis; heads about 5 cm. across; involucres about 21 mm. long, the outer bracts somewhat spreading, oblong, prominently corniculate, the in­ner lanceolate, corniculate; achenes dark brown, oblong, 4-5 mm. long, slightly flattened, with spinelikc tubercles at apex, slightly warty-tubercled toward the base. 

Honshu (Tanba and Izumo Prov.).