Japan Flora: Stems 25-85 cm. long, loosely crisped-pilose in upper portion; median leaves 12-19 cm. long inclusive of the petiole, usually ternate, loosely shorr-hairy on both sides, the lateral segments ovate, acute, short-petiolate, the terminal segments ovate or narrowly so, short-acuminate; involucral bracts 7 or 8, spathulate, 3-4 mm. long in anthesis, 5 mm. long in fruit, the inner chaff to 9 mm. long, narrow; heads eligulate; tubular corollas 5-toothed; achenes linear, 7-13 mm. long, about 1 mm. wide, flat, 4- angled, short-strigose, the awns 3 or 4, 1.5-2.5 mm. long.  

Kyushu (Hyuga Prov.). Widespread in tropical regions.

var. minor (BI.) Sherff. Heads with 5-7 sterile ligulate florets, the corollas 5-8 mm. long, 3.5-5 mm. wide, white. Honshu and  Kyushu. Korea, China, Formosa, Ryukyus, and generally in the tropics.