玉山蟹甲草 yu shan xie jia cao

Stem solitary, erect or curved, 47-70 cm tall, paniculate-branched above, glabrous below, upper part and branches crisped-pubescent. Leaves papery, sparsely distributed. Lower leaves long petiolate; petiole ca. 12 cm, not winged; blade abaxially pale green, adaxially green, subtriangular-reniform, ca. 13 × 19 cm, abaxially densely lanate, adaxially crisped-pubescent, base cordate, marginal teeth mucronulate, apex acute. Upper leaves smaller, shortly petiolate. Capitula numerous, arranged in terminal panicles; peduncles 1-3.5 mm, slender, with 1 or 2 subulate bractlets. Involucres cylindric, 8.5-11 mm, calyculate; phyllaries 2, narrowly oblong, 1.5-2 mm wide, glabrous, apex obtuse. Floret 1; corolla yellow, 8.5-10.5 mm; lobes lanceolate, ca. 1.5 mm. Achenes cylindric, ca. 5 mm, glabrous. Pappus white, 6-7 mm. Fl. Aug.

● Mountain summits; ca. 3000 m. Taiwan (Jiayi, Yilan).