白紫千里光 bai zi qian li guang

Senecio bracteolatus J. D. Hooker, Fl. Brit. India 3: 339. 1881, not Hooker & Arnott (1841).

Herbs, dwarf, rhizomatous. Stems erect, 8-20 cm tall, slender, simple, arachnoid-tomentose, glabrescent. Basal leaves mostly present at anthesis, long petiolate; blade elliptic or obovate-elliptic, obtusely few toothed or sublobulate; median stem leaves shorter petiolate; petiole somewhat expanded at base, not auriculate; blade oblong or oblong-lanceolate, 3-5 × 1-1.5 cm, pinnately lobed or pinnatifid with 6-10 oblong or ovate-oblong shallowly denticulate or subentire lateral lobes, abaxially densely tomentose, adaxially sparsely arachnoid, pinnately veined. Upper leaves smaller, lanceolate to linear-lanceolate, lobed or subentire, basally sessile and subamplexicaul. Capitula radiate, 2-6 in lax terminal corymb, rarely solitary; peduncles to 5 cm, sparsely arachnoid, with 2 or 3 linear or linear-subulate bracteoles. Involucres campanulate, 8-10 × 7-8 mm, calyculate; bracts of calyculus 6-8(-10), green or purplish, linear-subulate, 3-5 mm, acute, sparsely arachnoid; phyllaries 18-20, green or purplish, linear-lanceolate, 1-1.5 mm wide, dark brown or purplish on upper margin, herbaceous, sparsely arachnoid, glabrescent, apically acuminate and white pubescent. Ray florets 10-13; corolla tube ca. 5 mm; lamina yellow, oblong, 10-12 × ca. 2 mm, 4-veined, apically 3-denticulate. Disk florets many; corolla yellow, 7-8 mm, with 3-3.5 mm tube and funnelform limb; lobes ovate-lanceolate, ca. 1.5 mm, apically acute, papillose. Anthers ca. 2.5 mm, basally subacutely auriculate, appendages ovate-lanceolate; antheropodia elongate, basally somewhat dilated. Style branches ca. 1.5 mm. Achenes cylindric, ca. 2.5 mm, glabrous. Pappus white or straw-colored at least at base, ca. 7 mm. Fl. Jul-Aug.

Streamsides; 3900-4300 m. S Xizang (Gyirong) [Bhutan, India (Sikkim), Nepal].