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Plant Diversity and Resources

Journal of Systematics and Evolution

Volume 55 Issue 5, Pages 453C465.

Published Online: 20 July 2017

DOI: 10.1111/jse.12256

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In search of the phylogenetic affinity of the temperate woody bamboos from Madagascar, with description of a new species (Bambusoideae, Poaceae)

Yu-Xiao Zhang1, Peng-Fei Ma1, Thomas Havermans2, Maria S. Vorontsova3, Ting Zhang1, Olinirina Prisca Nanjarisoa4, and De-Zhu Li1*

1Germplasm Bank of Wild Species, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, Yunnan 650201, China

2Institut de Syst└matique, Évolution, Biodiversit└ ISYEB, Unit└ Mixte de Recherche 7205, Centre National de la Recherche Scientifique/Mus└um national d'histoire naturelle/École Pratique des Hautes Études/Universit└ Pierre-et-Marie-Curie, Mus└um national d'histoire naturelle, Sorbonne Universit└s, France

3Royal Botanic Gardens Kew, Richmond, Surrey TW9 3AB, UK

4Kew Madagascar Conservation Centre, Antananarivo 101, Madagascar

Keywords: Arundinarieae; new combinations; Oldeania; plastid markers


Six temperate woody bamboos (Arundinarieae, Bambusoideae) from Madagascar were described in the genus Arundinaria during the 1920s to 1960s. However, recent phylogenetic studies imply that Arundinaria is restricted to North America, and taxonomic affiliation of the Malagasy temperate woody bamboos remained ambiguous. In search of phylogenetic affinity of these bamboos, herbarium observation, fieldwork, and molecular phylogenetic analysis have been carried out. Four of them and one potential new species were sampled for molecular phylogenetic analyses in the context of the tribe Arundinarieae. Maximum likelihood and Bayesian analyses indicated that those species were closely related to Oldeania alpina distributed in continental Africa, but not Arundinaria, Bergbambos, Fargesia (includingSinarundinaria), Thamnocalamus, or Yushania, in which they were placed at one time or another. On the grounds of molecular phylogeny, morphology, and phytogeography, the Malagasy temperate woody bamboos should be treated as members of the genus Oldeania. Arundinaria humbertii and A. ambositrensis are conspecific. A new species, Oldeania itremoensis, is described and illustrated. The other two temperate woody bamboo species in Madagascar not sampled in the molecular phylogeny are also transferred to Oldeania on the basis of morphology.


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