All Floras      Advanced Search
FOC Vol. 20-21 Page 6, 464, 487 Login | eFloras Home | Help
FOC | Family List | FOC Vol. 20-21 | Asteraceae

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.

1 Pappus absent from all florets.   5 N. concinnus
+ Pappus present in all florets, at least when young   (2)
2 (1) Phyllaries usually 6-8; achenes and ovary glabrous.   4 N. solenoides
+ Phyllaries more than 10; achenes and ovary pubescent or apically sparsely setose   (3)
3 (2) Capitula small; involucres 2-3 × 2-3 mm; ray lamina short, ca. 2 mm.   1 N. formosanus
+ Capitula larger; involucres 4.5-7 × 3-8 mm; ray lamina 5-13 mm   (4)
4 (3) Involucres 3-4 mm in diam.; leaves usually with 3 or 4(or 5) lateral lobes on each side; ray lamina 5-7 mm.   2 N. incisifolius
+ Involucres 6-8 mm in diam.; leaves usually with 6 or 7 lateral lobes on each side; ray lamina 11-13 mm.   3 N. yunnanensis

Lower Taxa


Flora of China @
Browse by
Advanced Search

Flora of China Home




 |  eFlora Home |  People Search  |  Help  |  ActKey  |  Hu Cards  |  Glossary  |