Affinities of the Boletus chromapes group to Royoungia and the description of two new genera, Harrya and Australopilus
Roy E. Halling A J , Mitchell Nuhn B , Todd Osmundson C , Nigel Fechner D , James M. Trappe E , Kasem Soytong F , David Arora G , David S. Hibbett H and Manfred Binder IA Institute of Systematic Botany, The New York Botanical Garden, Bronx, NY 10458-5126, USA.
B Department of Biology, Clark University, Worcester, MA 01610-1477, USA. Email: mnuhn@clarku.edu
C Department of Environmental Science, Policy & Management, University of California, Berkeley, CA 94720, USA. Email: toddo@berkeley.edu
D Queensland Herbarium, Mt Coot-tha Road, Toowong, Brisbane, Qld 4066, Australia. Email: nigel.fechner@science.dsitia.qld.gov.au
E Department of Forest Ecosystems and Society, Oregon State University, Corvallis, OR 97331-5752, USA. Email: trappej@onid.orst.edu
F Faculty of Agricultural Technology, King Mongkut’s Institute of Technology, Ladkrabang, Bangkok, Thailand. Email: ajkasem@gmail.com
G PO Box 672, Gualala, CA 95445, USA. Email: maxfun@cruzio.com
H Department of Biology, Clark University, Worcester, MA 01610-1477, USA. Email: dhibbett@clarku.edu
I CBS-KNAW Fungal Biodiversity Centre, Uppsalalaan 8, NL-3584 CT, Utrecht, the Netherlands. Email: m.binder@cbs.knaw.nl
J Corresponding author. Email: rhalling@nybg.org
Australian Systematic Botany 25(6) 418-431 https://doi.org/10.1071/SB12028
Submitted: 18 August 2012 Accepted: 8 October 2012 Published: 14 December 2012
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 confirmed 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.
Additional keywords: biogeography, Boletineae, boletes, evolution, phylogeny, ribosomal DNA, translation elongation factor 1α.
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