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

56. Senecio tarokoensis C. I Peng, Bot. Bull. Acad. Sin. 40: 57. 1999.

太鲁阁千里光 tai lu ge qian li guang

Herbs, perennial, erect, shortly rhizomatous. Stems erect, 15-75 cm tall, simple, striate, villous toward base, glabrous or subglabrous in upper part. Leaves petiolate, exauriculate; petiole 3-8 cm; blade thickly papery to leathery, lower and median stem leaves triangular-ovate or lanceolate, 3-9 × ca. 2.5 cm, abaxially villous, adaxially almost glabrous, base obtuse, truncate, or cordate, sometimes with 1 or 2 small lateral lobes near base, margins serrate to coarsely serrate or serrate-sublobulate, apically acute, mucronate; upper stem leaves shortly petiolate to subsessile, lanceolate to linear, (3-)4-5 × (0.3-)1-2 cm, irregularly lobed to subentire. Capitula radiate, up to ca. 20 in lax terminal corymbs; peduncles 2.5-6(-12) cm, slender, subglabrous to sparsely puberulent, with 2-5 remote, linear, ascending, 1-4.5 mm bracteoles. Involucres cylindric, ca. 8 × 5-6 mm, calyculate; bracts of calyculus 4 or 5, 3-3.5 mm; phyllaries ca. 20, green, linear-lanceolate, ca. 1.5 mm wide, glabrous to sparsely puberulent, margins membranous, apically tinged purple, acuminate. Ray florets 8-12; corolla tube ca. 5 mm; lamina yellow, 10-12 mm, 4-veined. Disk florets ca. 40; corolla yellow, ca. 6.5 mm, with ca. 2 mm tube and funnelform limb; lobes 1.3-1.5 mm, acute. Anthers 1.8-2.2 mm, basally obtuse, appendages ovate, obtuse; antheropodia basally slightly dilated. Style branches ca. 1.2 mm. Achenes cylindric, 3-4 mm, slightly narrowed at both ends. Pappus white, 4-5.5 mm. Fl. Mar-Jun.

● Rocky limestone ridges; 1000-2000 m. Taiwan.


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