藤本紫菊 teng ben zi ju

Basionym: Prenanthes scandens J. D. Hooker in Bentham & J. D. Hooker, Gen. Pl. 2: 527. 1873.

Vines, herbaceous, perennial. Stem scandent, ± zigzag, flexible, apically branched and glandular hairy, leafy. Stem leaves with petiole 1-4 cm, unwinged, glandular hairy, basally not widened; leaf blade ovate, triangular-ovate, or lanceolate, 4-15 × 2-4[-7] cm, both surfaces ± glandular hairy, margin mucronately dentate, apex acuminate. Synflorescence terminal and in axils of upper leaves, divaricately corymbosely paniculiform, with several to many capitula. Capitula with usually 5-8 florets; peduncle usually less than 1 cm. Involucre 11-14 × 2-3 mm. Phyllaries tinged purplish red; outer phyllaries ovate to linear-lanceolate, largest 4-6 × ca. 1 mm, glandular hairy, apex acute; inner phyllaries 4 or 5, glabrous or sparsely glandular hairy, apex acute. Florets blue [?or dull violet to reddish purple]. Achene pale [?to dark purple], cylindric to subfusiform, 4-5 mm, basally more attenuate than apically, somewhat attenuate below pappus disk. Pappus ca. [0.7-]1 cm. Fl. and fr. Nov-Dec.

Forests, forest margins; 900-2000 m. Xizang, Yunnan [NE India].