Climbing herbs, stem ribbed, glabrous or puberulous, often densely hairy at nodes. Median cauline leaves opposite, ovate or triangular-ovate, 3-10×1.5-5 cm long, apex acute to acuminate, base hastate or sagittate, lobes acute or obtuse, margins mucronulate-dentate or irregularly coarsely dentate, upper surface green, lower surface pale, glandular punctate on both surfaces, soon glabrate; petiole slender, often curved, 1-6 cm long. Heads 4 or 5, in paniculate in corymbs terminating lateral branches, subtended by small linear bracts ca. 2.5 mm long, short peduncled or subsessile. Involucre 6-7×2.5-3 mm, bracts 4-seriate, oblong, acute, 5-7 mm long, scarious margined, glandular puberulous. Florets 4 per head, corolla tube minutely glandular, 4-5 mm long, limb 1.5 mm long, 5-fid; anthers with triangular appendages at apex. Achenes linear-oblong, 3-3.5×0.5 mm, glandular. Pappus bristles numerous, 3-4 mm long, white or reddish when dry.

TAIPEI: Hsiaokotou, Hsu 5200; Muchihshan, Shen 1974. ILAN: Nanao, Peng 13778. TAOYUAN: Hsiayunping, Peng 10283. HSINCHU: Wuchihshan, Kawakami 5902. MIAOLI: Yangmeishan, Peng 1809. TAICHUNG: Fengyuan, Peng 12168. NANTOU: Chingshuikou, Huang 1892; Jenlun Forest Road, Shen 157. CHIAYI: Tienyunshan, Peng 8879; Tsengwen Reservior, Chen 492. TAINAN: Kantoushan, Peng 7086. KAOHSIUNG: Shanhuhsi, Hsu & Peng 16098; Shanping, Lai 122. PINGTUNG: Lilungshan, Chen 866; Santimen, Peng 10240. TAITUNG: Tawu, Chung & Kao 2060; Lanyu Is., Peng 10635.

Tropical Asia. Taiwan, widespread from north to south, at forest edges.