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FOC | Family List | FOC Vol. 20-21 | Asteraceae | Senecio

46. Senecio raphanifolius Wallich ex Candolle, Prodr. 6: 366. 1838.

莱菔千里光 lai fu qian li guang

Jacobaea raphanifolia (Wallich ex Candolle) B. Nordenstam; Senecio diversifolius Wallich ex Candolle (1838), not Dumortier (1827).

Herbs, perennial, rhizomatous, with leafy stems. Stems solitary or sometimes 2 or 3, erect, 60-150 cm tall, simple or branching into synflorescence, sparsely arachnoid, glabrescent. Basal leaves sometimes present at but usually withered and shriveled or shed by anthesis; basal and lowest stem leaves long petiolate; petiole 5-8 cm, base expanded; blade oblanceolate, 15-30 × 2-5 cm, papery, abaxially sparsely arachnoid or glabrous, adaxially glabrous, lyrate-pinnatifid with a large, oblong or elliptic-oblong, incised-dentate or lobulate terminal lobe and 12-16 smaller, oblong, incised-dentate lateral lobes smaller toward base of leaf. Median stem leaves sessile; blade oblong, 10-15 × 2.5-4 cm, base auriculate; auricle broad, dentate or lacerate, subamplexicaul; blade pinnatifid or subpinnatisect with somewhat indistinct ovate-oblong terminal lobe and 10-16 oblong, sharply dentate or lacerate-lobulate, spreading or somewhat ascending lateral lobes. Upper leaves smaller, oblong to oblong-lanceolate, pinnately dentate or lobulate. Capitula radiate, numerous, arranged in terminal corymbs or compound corymbs; peduncles 1-3 cm, rather stout, at first sparsely arachnoid, fulvous puberulent, ± glabrescent, with usually 2 or 3 linear bracteoles. Involucres broadly campanulate or hemispheric, 5-7 × 4-10 mm, calyculate; bracts of calyculus 8-10, linear-subulate, ca. 3 mm; phyllaries 12-16, oblong, 1.5-2 mm, herbaceous, fulvous puberulent in lower part, ± glabrescent, margin narrowly scarious, apically acuminate, acute, blackish brown and pubescent. Ray florets 12-16; corolla tube ca. 3 mm; lamina yellow, oblong, ca. 8 × 2-3 mm, 4-veined, apically obtuse, 3-denticulate. Disk florets many; corolla yellow, ca. 5 mm, with ca. 2 mm tube and funnelform limb; lobes oblong-lanceolate, ca. 1 mm, apically acute, papillose. Anthers ca. 2 mm, basally obtuse-auriculate, appendages ovate-lanceolate; antheropodia rather elongated, basally markedly dilated. Style branches ca. 0.8 mm. Achenes cylindric, ca. 3 mm, glabrous. Pappus reddish brown, 4-5 mm, present in disk florets, scant and soon deciduous or absent in ray florets. Fl. Jul-Sep.

Montane forests, meadows, grassy slopes, riverbanks; 2700-4400 m. Xizang [Bhutan, NE India, N Myanmar, Nepal].


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