Coetzee, Martin Petrus AlbertusWingfield, Brenda D.Zhao, JunVan Coller, Sophia JohannaWingfield, Michael J.2016-08-152015-09Coetzee, MPA, Wingfield, BD, Zhao, J, Van Coller, SJ & Wingfield, MJ 2015, 'Phylogenetic relationships among biological species of Armillaria from China', Mycoscience, vol. 56, no. 5, pp. 530-541.1340-3540 (print)1618-2545 (online)10.1016/j.myc.2015.05.001http://hdl.handle.net/2263/56311Fourteen Chinese Biological Species (CBS) of Armillaria were previously identified in a collection of Chinese isolates. CBS C, F, G, H, J, L, N and O remained unnamed, while the remaining isolates included A. borealis, A. cepistipes, A. gallica, A. mellea, A. sinapina and A. tabescens. CBS F was suggested to represent A. singula based on basidiocarp morphology. In this study, phylogenetic relationships between Chinese Armillaria isolates and those from other parts of the world were determined based on DNA sequence data. Results of this study suggest that CBS F might not represent A. singula, and that A. monadelpha (a name applied to the North American form of A. tabescens by some authors) and A. tabescens should be treated as a single species. Four main phylogenetic lineages, referred to as the A. ostoyae, A. gallica, A. tabescens and A. mellea clusters, were identified on the phylogenetic trees. The unnamed biological species grouped within the “A. gallica cluster” and were phylogenetically closely related. The results of this study contribute to our current understanding of the systematics of Armillaria from South East Asia where these fungi are relatively poorly known.en© 2015 The Mycological Society of Japan. Published by Elsevier B.V. All rights reserved. Notice : this is the author’s version of a work that was accepted for publication in Mycoscience. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Mycoscience, vol. 56, no. 5, pp. 530-541, 2015. doi : 10.1016/j.myc.2015.05.00.Fungal diagnosticsIntergenic spacer region one (IGS-1)Root rotTranscription elongation factor one alpha (TEF-1α) genePostprint Article