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

47. Senecio echaetus Y. L. Chen & K. Y. Pan, Acta Phytotax. Sin. 19: 94. 1981.

裸缨千里光 luo ying qian li guang

Jacobaea echaeta (Y. L. Chen & K. Y. Pan) B. Nordenstam.

Herbs, perennial, rhizomatous, with leafy stems. Stem solitary, erect, 30-60 cm tall, simple or branching into synflorescence, arachnoid, glabrescent. Basal leaves withered by anthesis, petiolate; lower and median stem leaves sessile; blade oblong-lanceolate, 4.5-8 × 1.5-5 cm, papery, abaxially sparsely finely pubescent on main veins, adaxially glabrous, pinnatifid or subpinnatisect with small, rather indistinct terminal lobe and 18-20 oblong, 2-2.5 × 0.5-1 cm, acutely dentate or lacerate-lobulate, spreading or somewhat ascending lateral lobes; base auriculate; auricle dentate or lacerate, subamplexicaul. Upper leaves smaller, oblong-lanceolate to lanceolate, pinnately lobulate. Capitula radiate, 3-10 in terminal and upper axillary corymbs; peduncles 10-15 mm, arachnoid, with 1 or 2 linear bracteoles. Involucres campanulate or hemispheric, 5-6 × 6-8 mm, calyculate; bracts of calyculus 6-8, linear, 3-4 mm, apically acuminate, purplish; phyllaries 20-22, lanceolate, 4-5 × 1-1.5 mm, herbaceous, sparsely arachnoid-pubescent at base, 3-veined, apically acuminate or acute, dark margined and white bearded. Ray florets 16-18; corolla tube ca. 2.5 mm; lamina yellow, elliptic-oblong, 9-10 × ca. 3 mm, 8-veined, apically 3-denticulate. Disk florets many; corolla yellow, ca. 5 mm, with 1-1.5 mm tube and funnelform limb; lobes ovate-oblong, ca. 1.2 mm, apically acute, papillose. Anthers ca. 2 mm, basally acutely long auriculate, appendages ovate-lanceolate; antheropodia rather short, basally distinctly dilated. Style branches ca. 0.7 mm. Achenes cylindric, ca. 1.7 mm, glabrous. Pappus absent from all florets. Fl. Jul.

Tsuga forests; ca. 2700 m. S Xizang (Gyirong) [Nepal].


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