Herbs, rhizomatous. Rhizome woody, creeping. Stem solitary, subscandent, flexuous, 35-45 cm, slender, pubescent with brownish multicellular hairs, glabrescent, leafy. Leaves shortly petiolate; petiole 0.5-0.8 cm, ± pubescent; blade abaxially purple, adaxially deep green, ovate or ovate-lanceolate, 4-10 × 1.5-2.5 cm, papery, abaxially sparsely pubescent on veins to glabrous, adaxially scattered setulose to glabrous, triplinerved from base, base rounded, ± falcate in upper part, margin remotely sinuate-denticulate to rather distantly coarsely serrate with mucronate teeth, apex acuminate or caudate-acuminate; uppermost leaves similar but smaller and narrower. Capitula heterogamous, disciform, in lax terminal and upper axillary 3-7-headed corymbs; peduncles 6-18 mm, slender, linear-bracteate at base, with 1 or 2 linear bracteoles in upper part, sparsely shortly fulvous pubescent. Involucres cylindric, 8-12 × 2-3 mm, obscurely calyculate; bracts of calyculus 1-3, unequal; phyllaries 5, oblong-linear, 1-1.5 mm wide, herbaceous, glabrous, 3-veined, margin narrowly scarious, apically obtuse and pubescent. Marginal female florets 2; corolla yellow, ca. 5 mm, filiform, not radiate, shorter than style. Disk florets 3 or 4; corolla yellow, ca. 13 mm, with ca. 4 mm tube and narrowly funnelform limb; lobes oblong-lanceolate, ca. 1.5 mm, apically acute, puberulent. Anthers long exserted, ca. 5 mm, anther tails 0.5-0.75 × as long as antheropodia; appendages ovate-oblong; antheropodia long, stout, basally distinctly dilated. Style branches ca. 2 mm, fringed with stout papillae, terminal tuft much longer than lateral ones. Achenes ca. 3.5 mm, glabrous. Pappus white, ca. 9 mm. Fl. and fr. Aug-Sep.
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