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

29. Sinosenecio jishouensis D. G. Zhang, Y. Liu & Q. E. Yang, Bot. Stud. 49: 287. 2008.

吉首蒲儿根 ji shou pu er gen

Herbs, rhizomatous, with leafy stems, without stolons. Stems solitary or several, erect, to 40 cm tall, simple, pubescent. Basal leaves long petiolate; petiole 4-16 cm, sparsely pubescent, basally expanded; blade elliptic-lanceolate, 4-14 × 2-5 cm, papery or thinly so, both surfaces sparsely pubescent, pinnately veined, lateral veins 6-10, base broadly cuneate, margin irregularly sinuate-dentate, apex acute or acuminate. Stem leaves similar but smaller, with shorter petioles. Capitula 5 to many in terminal corymbs; peduncles 1-2 cm, pubescent, apically dilated. Involucres campanulate, 5-7 × 6-8 mm; phyllaries ca. 13, oblong-lanceolate, 6-7 × 1.5-2 mm, herbaceous, pubescent, apically acute to subacute. Ray florets ca. 13; corolla tube ca. 2 mm, glabrous; lamina yellow, oblong-elliptic, 8-10 × 3-4 mm, 4-veined, apically 3-denticulate. Disk florets numerous; corolla ca. 4 mm, with ca. 2 mm tube and campanulate limb; lobes ovate-lanceolate. Anthers ca. 1.5 mm, basally obtuse, appendages ovate-oblong. Style branches ca. 1 mm. Achenes cylindric, ca. 1.5 mm, smooth, glabrous. Pappus absent. Fl. Mar-Apr, fr. May. 2n = 48*, 96*.

● Wet soil on limestone, along streams, below waterfalls; ca. 300 m. NW Hunan (Jishou).

Sinosenecio jishouensis is readily distinguishable by the pinnately veined leaves and epappose achenes. This species is related to S. globiger and its allies in habit and floral structure.


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