Eupatorium tozanense Hayata
Plants rhizomatous. Stems solitary, erect, 70-100 cm tall, crisp pubescent. Lower opposite, lower ones small, median leaves short-petiolate, ovate-oblong or elliptic in outline, 10-15×2-4 cm, pinnately veined, long acuminate, base cuneate, margins crenate-serrate, lower surface glandular dotted, both sides loosely crisp pubescent, with 6 or 7 pairs of lateral nerves, petiole 1-2 cm long. Inflorescence of loose corymbs; heads cylindric, 5-6 mm long, 5-flowered; involucral bracts 2-seriate, outer bracts very short, scarious, rounded at apex. Achenes cylindric, ca. 3 mm long, glandular or pilose; pappus white, 4 mm long.
TAIPEI: Tatunshan, Peng 2351. ILAN: Taipingshan, Sasaki 486. HSINCHU: Kuanwu, Chung 128. TAICHUNG: Pahsienshan, Chang 2733. CHIAYI: Tatachia, Wu 10192. PINGTUNG: Wutai, Yang 11243. HUALIEN: Lintienshan, Chang 17306.
The typical variety is in China and Japan. Variety tozanense is endemic to Taiwan, common in mountains, 1,000-2,500 m.
Eupatorium chinense var. tozanense differs from the typical variety by its crenate-serrate leaves with long-acuminate apex.