Australian Systematic Botany Australian Systematic Botany Society
Taxonomy, biogeography and evolution of plants

Systematics, Mycogeography, and Evolutionary History of Tylopilus subg. Roseoscarbra in Australia Elucidated by comparison with Asian and American Species

CB Wolfe and NL Bougher

Australian Systematic Botany 6(3) 187 - 213
Published: 1993


The discovery of specimens of Tylopilus subg. Roseoscarbra in Australia prompted a comparative study of similar specimens from China, Japan, Costa Rica, and Eastern North America. The subgenus apparently originated in Laurasia. Populations of the subgenus migrated southwards from eastern Asia with their ectomycorrhizal hosts during Miocene/Pleistocene glaciations and subsequently adapted to different hosts in north-eastern Australia. The divergence in Australia is recognised in the new species: T. subchromapes, T. palumanus, T. queenslandianus, and T. propriorichromapes. Northern hemisphere populations disjuncted by the formation of the Atlantic Ocean are now recognised as new species in China — T. chlorinosmus, T. chromoreticulatus, and T. pinophilus — and in Japan, T. hongoi. During Pleistocene glaciation North American populations may have diverged in North and Central America that are recognised in Central America as T. cartagoensis and in North America as T. chromapes.

© CSIRO 1993

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