关山千里光 guan shan qian li guang

Herbs, perennial, rhizomatous. Stems solitary, erect, 32-44 cm tall, branching in upper part, glabrous. Basal and lower stem leaves withered by anthesis; stem leaves numerous, shortly petiolate; petiole 1-2 cm; median stem leaf blade broadly lanceolate, 11-13 × 3.5-5 cm, papery, glabrous, very deeply and narrowly bipinnately or tripinnately lobed, lobes spreading, lanceolate to linear, margin coarsely dentate or incised, apex attenuate, acute; upper leaves smaller, linear-lanceolate to linear, remotely dentate. Capitula radiate, numerous, in lax terminal corymbs; peduncles 3-7 cm, slender, sparsely pubescent or glabrous; bracteoles 1-3, linear, 2-3 mm, sparsely pubescent or subglabrous. Involucres subcylindric, 8-10 × 4-6 mm, calyculate; phyllaries usually 13, linear, 0.5-1 mm wide, herbaceous, glabrous, margin narrowly scarious, apex acute to subobtuse, puberulent. Ray florets 5(or 6); corolla tube ca. 8.5 mm; lamina yellow, 9-14 × ca. 3.5 mm, 4-veined, 3-denticulate. Disk florets 14 or 15; corolla yellow, 7-8 mm, with 4-5 mm tube and funnelform limb; lobes oblong-lanceolate, 1-1.5 mm, apically acute, papillose. Anthers ca. 2.5 mm, basally shortly auriculate, appendages ovate-lanceolate. Achenes cylindric, 2-3 mm, sparsely hirtellous on ribs. Pappus white, ca. 7.5 mm. Fl. Aug-Oct.

● Forests, bamboo thickets; 2500-3300 m. Taiwan.