105. Nemosenecio (Kitamura) B. Nordenstam, Opera Bot. 44: 45. 1978.
羽叶菊属 yu ye ju shu
Authors: Yilin Chen, Bertil Nordenstam & Charles Jeffrey
Senecio sect. Nemosenecio Kitamura, Acta Phytotax. Geobot. 6: 266. 1937.
Herbs, perennial or biennial, erect, rhizomatous, with fibrous roots. Leaves alternate, herbaceous, green; basal and lower stem leaves usually fallen by anthesis; petiole unwinged; blade broadly ovate to ovate-oblong, pinnately veined, deeply pinnatipartite into usually lobulate or coarsely shortly dentate lobes. Capitula few to moderately numerous in terminal, lax, subumbelliform cymes, heterogamous, radiate; peduncles slender. Involucres ecalyculate, broadly campanulate, cupuliform, or subhemispheric; phyllaries 6-8 or 11-13, oblong to ovate-lanceolate, with minutely puberulent tips and scarious margins. Receptacle convex-hemispheric, alveolate, glabrous. Ray florets 5-13; lamina yellow, linear-lanceolate, oblong-lanceolate, or oblong, 4(-6)-veined, apically shortly bifid or 3-dentate. Disk florets many; corolla yellow, tube narrow; limb campanulate; lobes 5. Anthers rounded to obtuse at base; antheropodia narrowly cylindric to cylindric, not or somewhat broader than filaments, with uniform cells, endothecial cell wall thickenings scattered or radial, never strictly polarized. Style branches short, apically truncate, with rather short, obtuse marginal papillae, dorsally glabrous or minutely papillate. Achenes cylindric, ribbed, shortly pubescent or glabrous; carpopodium distinct. Pappus of barbellate bristles, persistent, or absent from all florets, white.
Six species: China, Japan; five species (all endemic) in China.