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Affinities of the Boletus chromapes group to Royoungia and the description of two new genera, Harrya and Australopilus

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Abstract
  • Harrya is described as a new genus of Boletaceae to accommodate Boletus chromapes, a pink capped bolete with a finely scabrous stipe adorned with pink scabers, a chrome yellow base, and a reddish brown spore deposit. Phylogenetic analyses of large subunit rDNA and translation elongation factor 1α confirm Harrya as a unique generic lineage with two species, one of which is newly described (H. atriceps). Some Chinese taxa were recently placed in a separate genus, Zangia, supported by both morphology and molecular data. Multiple accessions from Queensland, Australia support the synonymy of at least three species in a separate Australian clade in the new genus, Australopilus. The truffle-like Royoungia is also supported as a separate lineage in this clade of boletes. Even though it lacks stipe characters, it possesses the deep, bright yellow to orange pigments in the peridium. Additional collections from Zambia and Thailand represent independent lineages of uncertain phylogenetic placement in the Chromapes complex, but sampling is insufficient for formal description of new species. Specimens from Java referable to Tylopilus pernanus appear to be a sister group of the Harrya lineage.
  • This is the author's manuscript version. The published article is copyrighted by CSIRO and can be found at: http://www.publish.csiro.au/nid/150.htm.
  • Keywords: Boletineae, ribosomal DNA, phylogeny, biogeography, boletes, translation elongation factor 1α, evolution
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  • Halling Roy E., Nuhn Mitchell, Osmundson Todd, Fechner Nigel, Trappe James M., Soytong Kasem, Arora David, Hibbett David S., Binder Manfred (2012) Affinities of the Boletus chromapes group to Royoungia and the description of two new genera, Harrya and Australopilus. Australian Systematic Botany 25, 418–431. http://www.publish.csiro.au/paper/SB12028.htm doi: 10.1071/SB12028
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  • 25
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  • 6
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  • The senior author is grateful to The National Science Foundation (USA) for funding under grants DEB #9972018, DEB #0414665, and DEB #1020421 (the latter awarded to REH, DSH and MB), and to the National Geographic Society Committee for Research and Exploration in grants #7341-02, #8457-08. The Queensland Herbarium (BRI; Dr. G. Guymer, Director) provided assistance and support to REH for herbarium and field studies while in Queensland. Collaboration of Dr. J. Carranza at Universidad de Costa Rica in support of the Macrofungi of Costa Rica project with REH and G. Mueller is very much appreciated.
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