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

23. Senecio nodiflorus C. C. Chang, Bull. Fan Mem. Inst. Biol., Bot. 6: 54. 1935.

节花千里光 jie hua qian li guang

Senecio drukensis C. Marquand & Airy Shaw var. nodiflorus (C. C. Chang) Handel-Mazzetti.

Herbs, rhizomatous. Stem usually solitary, erect, 10-50 cm tall, simple or branching into synflorescence, densely to laxly white arachnoid. Basal and lower stem leaves mostly present at anthesis; petiole 2.5-8 cm, sparsely arachnoid or glabrescent, basally somewhat expanded; blade ovate to elliptic-oblong, 4-6 × 1-3.5 cm, papery, abaxially white and densely arachnoid, adaxially sparsely arachnoid and ± glabrescent, pinnately veined, base cuneate, margin irregularly mucronate-dentate, apex rounded to subacute. Median stem leaves shortly petiolate; blade elliptic-oblong or oblong-lanceolate. Upper leaves sessile, oblong-linear to linear, gradually smaller, base subamplexicaul; uppermost leaves linear, bractlike. Capitula 1-15, terminal on synflorescence branches, rather lax, thyrsoid, ca. 3 cm in diam., nodding; peduncles erect, apically recurved, 1-4.5 cm, stout, densely arachnoid-tomentose, bracteate; bracteoles 1 or 2, linear-lanceolate or linear, 5-12 mm. Involucres campanulate, 7-8 × 6-10 mm, calyculate; bracts of calyculus 8, purplish, linear, 4-6 mm, arachnoid-tomentose; phyllaries ca. 20, linear, 7-8 × 0.5-1 mm, subleathery, blackish purple on veins and in upper part, sparsely arachnoid, ± glabrescent, obscurely 3-veined, apically acute and villous. Ray florets 18-21; corolla tube ca. 4.5 mm; lamina bright yellow, oblong, ca. 8 × 2-3 mm, 4-veined, apically obtuse, 3-denticulate. Disk florets many; corolla yellow, ca. 8 mm, with ca. 4 mm tube and funnelform limb; lobes ovate-triangular, apically purplish, acute, and papillose. Anthers ca. 2.3 mm, basally obtusely or subacutely auriculate, appendages ovate-lanceolate; antheropodia elongated, robust, basally slightly dilated. Style branches ca. 1.3 mm. Achenes cylindric, ca. 3 mm, glabrous. Pappus white, 7-8 mm. Fl. Aug-Oct.

● Wet stony pastures, rocky places, gravelly places, boulder screes; 3000-4500 m. Xizang, Yunnan (Dêqên).


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