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题名: Youngia zhengyiana (Asteraceae, Crepidinae), a new species from south China, with notes on the systematics of Youngia inferred from morphology and nrITS phylogeny
作者: Deng, Tao1, 2; Zhang, Jian-Wen1; Zhu, Xin-Xin1, 2; Zhang, Dai-Gui3; Nie, Ze-Long1; Sun Hang(孙航)1
刊名: PHYTOTAXA
关键词: Cichorieae ; Compositae ; Lapsanastrum ; molecular phylogeny ; morphology ; Pseudoyoungia
英文摘要: Youngia zhengyiana, a new species of Youngia sect. Mesomeris (Asteraceae: Crepidinae) from Guizhou province of south China is described and illustrated. The placement of this species within Youngia is assessed based on a molecular phylogenetic analysis of the nuclear ribosomal ITS and on morphological comparisons with related species. The new species can be easily distinguished by morphology from the only species known to possess 5 florets, Y. szechuanica. The infrageneric classification and the recently debated circumscription of Youngia are discussed in the light of the nrITS phylogeny, which includes several species for the first time. Pseudoyoungia is confirmed as a congener of Youngia. The redefined Youngia is still non-monophyletic with Lapsanastrum nested within it.
出版日期: 2014-06-04
卷号: 170, 期号:4, 页码:259-268
语种: 英语
收录类别: SCI
学科分类: Plant Sciences
ISSN号: 1179-3155
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.kib.ac.cn/handle/151853/18204
Appears in Collections:中国科学院东亚植物多样性与生物地理学重点实验室_期刊论文

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作者单位: 1.Chinese Acad Sci, Kunming Inst Bot, Key Lab Plant Divers & Biogeog East Asia, Kunming 650201, Yunnan, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100039, Peoples R China
3.Jishou Univ, Key Lab Plant Resources Conservat & Utilizat, Jishou 416000, Hunan, Peoples R China

Recommended Citation:
Deng,Tao;Zhang,Jian-Wen;Zhu,Xin-Xin;Zhang,Dai-Gui;Nie,Ze-Long;Sun,Hang.Youngia zhengyiana (Asteraceae, Crepidinae), a new species from south China, with notes on the systematics of Youngia inferred from morphology and nrITS phylogeny,PHYTOTAXA,2014,170(4):259-268
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