山芥菊三七 shan jie ju san qi

Gynura divaricata (Linnaeus) Candolle subsp. barbareifolia (Gagnepain) F. G. Davies; G. maclurei Merrill.

Herbs, perennial. Stems erect or slightly curved, 30-80 cm tall, simple or branched, canaliculate. Leaves lax, rarely densely crowded; petiole auriculate at base; blade lyrate-pinnately divided, 4-12 cm, base attenuate into a lobed petiole; terminal lobe large, triangular-ovate, 3-7 × 2-5 cm, base truncate or subcordate, rarely cuneate, margin irregularly sharply serrate or lobulate, apex acuminate or rather obtuse; lateral lobes usually 2-4-paired, opposite or alternate, ovate-oblong or oblong, entire or laxly dentate, 5-10 cm, not black when dry, fulvous-black, adpressed shortly pubescent on both surfaces, lateral veins 6-8-paired, inconspicuously reticulate; auricles similar to lateral lobes. Capitula usually 1-3, in terminal lax corymbs; peduncles 1-3 cm, fulvous puberulent; bracts 1-3, linear. Involucres campanulate, 10-15 × 8-12 mm, with several calycular bracts; phyllaries ca. 13, linear-oblong, 9-12 × 1-1.5 mm, densely or sparsely puberulent, inconspicuously 3-veined, margin scarious, apically acuminate. Florets yellow; corolla 11-14 mm, with 9-11 mm slender tube and dilated limb; lobes ovate, apically acuminate, reddish tinged. Anthers obtuse at base. Style branch tips subulate, papillose. Achenes cylindric, 1.5-2.7 mm, 9-11-ribbed, puberulent between ribs. Fl. and fr. Apr-May.

Rocky places and ravines in forests; sea level to 1500 m. Hainan, S Yunnan [N Vietnam].