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A NEW SPECIES OF ROSCOEA SM. (ZINGIBERACEAE) FROM BHUTAN AND SOUTHERN TIBET

Published online by Cambridge University Press:  04 December 2000

C. NGAMRIABSAKUL  and
M. F. NEWMAN
C. NGAMRIABSAKUL
Affiliation:
Institute of Cell and Molecular Biology, Daniel Rutherford Building, The University of Edinburgh, Edinburgh EH9 3JH, UK
M. F. NEWMAN
Affiliation:
Royal Botanic Garden Edinburgh, 20A Inverleith Row, Edinburgh EH3 5LR, UK
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Abstract

A new species of Roscoea from Bhutan and southern Tibet, R. bhutanica Ngamriab., formerly included in R. tibetica Batalin, is described and a new key to all species of Roscoea is provided. While studying the phylogeny of Roscoea, we discovered that there is a correspondence between phylogeny and biogeography (Ngamriabsakul et al., 2000). There are two distinct areas of distribution in Roscoea, namely the Himalaya and China. Only R. tibetica has been recorded in both areas. Cowley (1982) indicated that this species was very variable and suggested that it might be divided. We now propose to name a new species, R. bhutanica, based on observation of living and herbarium material at the Royal Botanic Garden Edinburgh (RBGE) and a molecular systematic study. A morphological table comparing R. tibetica with R. bhutanica is given, along with the ITS sequences of R. tibetica, R. bhutanica and R. auriculata. The identification key to Roscoea species largely follows our phylogenetic tree (Ngamriabsakul et al., 2000).

Keywords

HimalayaITSkeyRoscoea bhutanicaRoscoea tibetica
Type
Research Article
Information
Edinburgh Journal of Botany , Volume 57 , Issue 2 , July 2000 , pp. 271 - 278
Copyright
© 2000 Trustees of the Royal Botanic Garden, Edinburgh

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