尾尖合耳菊 wei jian he er ju

Senecio acuminatus Wallich ex Candolle, Prodr. 6: 368. 1838.

Herbs, perennial. Stems erect, 40-120 cm tall, usually corymbosely branched in upper part, fulvous pubescent, glabrescent to glabrous. Leaves shortly petiolate; petiole 3-5 mm, glabrous or sparsely puberulent, not auriculate; blade narrowly elliptic or lanceolate, 8-18 × 1.5-3.5 cm, papery, nitid, abaxially glabrous or sparsely puberulent on veins, adaxially glabrous, pinnately veined, lateral veins 10-12, arcuate-ascending, prominent abaxially, base cuneate or attenuate and often unequal, margin rather remotely mucronate-serrulate or mucronate-serrate, apex acutely long acuminate or caudate-acuminate and sometimes falcate; upper leaves smaller. Capitula minutely radiate, numerous, arranged in terminal compound corymbs; peduncles 1-2 mm, fulvous puberulent, usually 1- or 2-bracteate and or bracteolate. Involucres narrowly cylindric, 5-6 × 1-1.5 mm, calyculate; bracts of calyculus 2 or 3, linear, ca. 2 mm, puberulent; phyllaries 3 or 4, linear-oblong, glabrous, margin scarious, apically obtuse and puberulent. Ray floret 1; corolla yellow, 5-7 mm, with 3-3.5 mm tube and linear ca. 3 mm lamina. Disk florets 2 or 3; corolla yellow, ca. 7 mm, with ca. 2.5 mm tube and funnelform limb; lobes oblong-lanceolate, ca. 1.5 mm, apically acute. Anthers ca. 3.2 mm, anther tails ca. 0.5 × as long as antheropodia; appendages ovate-oblong; antheropodia long, basally somewhat dilated. Style branches ca. 1 mm, fringed with short papillae, terminal tuft indistinct. Achenes ca. 3.5 mm, glabrous. Pappus straw-colored, 4-4.5 mm. Fl. Aug-Sep.

Forest margins, streamsides; 2600-3400 m. Xizang [Bhutan, India (Sikkim), Nepal].