Journal of Plant Research

, Volume 118, Issue 2, pp 129–135

Paraphyly of Cyrtomium (Dryopteridaceae): evidence from rbcL and trnL-F sequence data

  • Jin-Mei Lu
  • De-Zhu Li
  • Lian-Ming Gao
  • Xiao Cheng
  • Ding Wu
Original Article

DOI: 10.1007/s10265-005-0201-y

Cite this article as:
Lu, JM., Li, DZ., Gao, LM. et al. J Plant Res (2005) 118: 129. doi:10.1007/s10265-005-0201-y

Abstract

Cyrtomium is an Asiatic genus characterized by anastomosing veins with included veinlets, and comprises about 40 species. We sequenced rbcL and trnL-F sequences of 19 species of Cyrtomium and eight species from related genera in order to elucidate a molecular phylogeny of the genus using maximum-parsimony methods. The phylogenetic trees did not agree with traditional classifications. Cyrtomium was resolved as paraphyletic, and a clade including subseries Balansana of Cyrtomium, Cyrtogonellum, Polystichum subacutidens and Cyrtomidictyum (the BCPC clade) and a second one containing Cyrtomium sensu stricto were monophyletic. The results also implied that: (1) C. uniseriale was synonymous with C. balansae; (2) C. falcatum was likely the female parent of C. devexiscapulae; and (3) based on the rbcL and trnL-F sequence data, C. nephrolepioides and C. grossum were the female parents of C. shingianum and C. chingianum, respectively, although other evidence is needed for the confirmation of this hypothesis.

Keywords

Cyrtomium Molecular phylogeny Paraphyly rbcL trnL-F 

Copyright information

© The Botanical Society of Japan and Springer-Verlag 2005

Authors and Affiliations

  • Jin-Mei Lu
    • 1
    • 2
  • De-Zhu Li
    • 1
  • Lian-Ming Gao
    • 1
  • Xiao Cheng
    • 1
  • Ding Wu
    • 1
  1. 1.Laboratory of Plant Biodiversity and Biogeography, Kunming Institute of BotanyChinese Academy of SciencesHeilongtan, KunmingPeople’s Republic of China
  2. 2.Graduate School of the Chinese Academy of SciencesBeijingPeople’s Republic of China

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