Table of Contents

19 March 2004, Volume 42 Issue 2

  

Research Articles
• A revision of Clematis sect. Aspidanthera s.l. (Ranunculaceae)

  WANG Wen-Tsai

  J Syst Evol. 2004, 42(2): 97-135.
  

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  In this paper Clematis sect. Aspidanthera s.l. is revised. Seventy-two species and 15 varieties are recognized. They are keyed, described, and in most cases illustrated, and are classified into six subsections. Of them, one series, five species, and two v
• A preliminary investigation on the phylogeny of Saussurea (Asteraceae: Cardueae) based on chloroplast DNA trnL-F sequences

  WANG Yu-Jin, LIU Jian-Quan

  J Syst Evol. 2004, 42(2): 136-153.
  

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  Saussurea DC., a highly diversified genus with about 400 species in the Asteraceae, has been an extremely difficult group in both taxonomical and phylogenetic studies. The monophyletic origin, infrageneric classification and systematic positions of some s
• Karyotypes of 11 tetraploid species in Leymus

  YANG Rui-Wu, ZHOU Yong-Hong, ZHENG You-Liang, DING Chun-Bang, WEI Xiu-Hua

  J Syst Evol. 2004, 42(2): 154-161.
  

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  Karyotypes of 11 tetraploid species in Leymus Hochst. have been studied. The karyotype formulae are as follows: L. arenarius (L.) Hochst., 2n=4x=28=18m+4sm+6st (4sat); L. condensatus (J. Presl) A. Lve, 2n=4x=28=22m+4sm (2sat)+2st (2sat); L. innovatus (Be
• Karyotypes of six species and two subspecies in Pseudoroegneria and three species in Roegneria

  DING Chun-Bang, ZHOU Yong-Hong, ZHENG You-Liang, YANG Rui-Wu, WEI Xiu-Hua

  J Syst Evol. 2004, 42(2): 162-169.
  

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  Karyotypes of six species and two subspecies in Pseudoroegneria and three species in Roegneria were investigated. The karyotype formulae were as follows: P. spicata (Pursh) A. Lve, 2n=2x=14=12m (2sat)+2sm; P. strigosa ssp. aegilopoides (Drobov) A. Lve,
• Four new species of Begonia L. (Begoniaceae) from Guangxi, China

  FANG Ding, WEI Yi-Gang, QIN De-Hai

  J Syst Evol. 2004, 42(2): 170-179.
  

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  Four new species of the genus Begonia L. (Begoniaceae) from Guangxi, China are described and illustrated.
• Scapania macroparaphyllia, a new species of Scapania (Scapaniaceae) from Xizang, China

  CAO Tong, GAO Chien, SUN Jun, YU Jing, SONG Guo-Yuan, ZUO Ben-Rong

  J Syst Evol. 2004, 42(2): 180-182.
  

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  A new liverwort species, Scapania macroparaphyllia T. Cao, C. Gao & J. Sun, is described from Xizang (Tibet), China. The new species is closely related to S. bolanderi Aust. in the leaves bipartite to the base, leaf keels extremely short, leaf cells stron
• Notes on Carex subgen. Vignea (Cyperaceae) from China

  ZHANG Shu-Ren, LIANG Song-Yun

  J Syst Evol. 2004, 42(2): 183-185.
  

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  Carex leporina L. (Cyperaceae) is reported as a new record to China. The species was found from Burqin, Xinjiang. Its morphological description and line drawings are presented. The species is closely related to C. maackii Maxim. by having gynaecandrous sp
• The identity of Delphinium purpurascens and the reinstatement of the specific status of D. conocentrum, two Himalayan species in the Ranunculaceae

  YUAN Qiong, YANG Qin-Er

  J Syst Evol. 2004, 42(2): 186-190.
  

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  The type specimens of Delphinium purpurascens W. T. Wang, D. viscosum Hook. f. & Thoms. and D. conocentrum Chatterjee were carefully examined. D. purpurascens and D. viscosum show no essential differences from each other in all characters and hence are m
• A new synonym of Xanthium sibiricum Patrin ex Widder

  CHEN Yi-Lin, CHEN Shu-Rong

  J Syst Evol. 2004, 42(2): 191-192.
  

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  Xanthium sibiricum var. jingyuanense, a variety described based on the presence of only one chamber and only one achene in the conceptacle, is reduced to the synonymy of X. sibiricum.