双舌千里光 shuang she qian li guang

Senecio gyirongensis Y. L. Chen & K. Y. Pan; S. ramsbottomii Handel-Mazzetti.

Herbs, perennial, rhizomatous. Stem solitary, erect, 60-90 cm tall, flexuous, fulvous pubescent or glabrous. Basal leaves withered by anthesis; lower and median stem leaf petiole ± interruptedly winged in upper part, basally continuously and gradually more broadly winged, auriculate; auricle subamplexicaul, dentate; blade abaxially often purple, triangular or triangular-lanceolate, 7-12 × 2-5 cm, abaxially puberulent mostly on veins or glabrous, adaxially obscurely scattered pubescent, pinnately veined, veins rather prominent abaxially, base cordate to sagittate or subhastate and sometimes lyrately 2-4-lobed, margin irregularly coarsely dentate, apex acuminate. Upper leaves sessile, gradually smaller upward, triangular-lanceolate to linear-lanceolate, 5-10 × 1-2 cm, base cuneate, margin often lyrate-pinnatifid, confluent with auricle at base, apex acuminate-attenuate. Capitula small, radiate, numerous, arranged in dense terminal compound corymbs; peduncles very short, 1-2 mm, fulvous pubescent, minutely 1- or 2-bracteolate. Involucres cylindric, ca. 5 × 1 mm, calyculate; bracts of calyculus 5-7, minute, linear-subulate, black at apex; phyllaries 5 or 6, linear, ca. 3 mm, herbaceous, sparsely puberulent, margin narrowly scarious, apically obtuse and black. Ray florets 2; corolla tube ca. 2 mm; lamina yellow, ca. 4 × 1 mm, apically 3-denticulate. Disk florets 2 or 3; corolla yellow, ca. 6 mm, with ca. 2.3 mm tube and funnelform limb; lobes ovate-oblong, ca. 1.2 mm, apically acute. Anthers ca. 1.5 mm, basally obtuse-auriculate, appendages ovate-lanceolate; antheropodia rather short, slender, basally slightly dilated. Style branches ca. 0.7 mm. Achenes cylindric, ca. 1 mm, sparsely puberulent. Fl. Jun-Sep.

Open places; 3000-3900 m. Xizang [Bhutan, India (Sikkim), Myanmar, Nepal].