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Boletus rubricitrinus belongs in Pulchroboletus (Boletaceae)

2017-11-10 14:02:54

CZECH MYCOLOGY 69(2): 143–162, NOVEMBER 10, 2017 (ONLINE VERSION, ISSN 1805-1421)

ARIAN FARID, ALAN RUSSELL FRANCK, JAMES ROY GAREY



Abstract


The boletes are macrofungi which have undergone extensive taxonomic revisions since the advent of molecular tools. This paper provides the first DNA sequences of Boletus rubricitrinus, a common Florida bolete often found in lawns under Quercus, and likely has a distribution that extends to Texas. Based on ITS and LSU sequences and morphological studies we propose moving it to the genus Pulchroboletus. As the holotype is in poor condition, an epitype is established here. A thorough description of macroscopic and microscopic features is also provided for the species. These molecular and morphological data will be useful to further improve our understanding of bolete taxonomy.



Introduction


The boletes are a polyphyletic assemblage of macrofungi in the Boletales which are defined by stipito-pileate basidiomes with tubulose hymenophores. They were first placed in Boletus L. (Linnaeus 1753: 1176) and Boletaceae (Chevallier 1826: 248), obsolete concepts which both included polypores. The order Boletales was later introduced by Gilbert (1931) to exclusively include
boletes. Molecular phylogenetic tools (Martin et al. 2011) have expanded the Boletales to include agaricoid, resupinate, and gasteroid fungi (Bruns et al. 1989, Hibbett et al. 1997, Binder & Bresinsky 2002b, Binder & Hibbett 2006). There are over 1,300 species in the Boletales, comprised of 17 families and about 100 genera (Kirk et al. 2008). Boletaceae sensu stricto now contains about 70 genera and approx. 800 species (Bresinsky et al. 1999, Binder & Bresinsky 2002a, Binder & Hibbett 2006, Drehmel et al. 2008, Desjardin et al. 2009, Orihara et al. 2010, Li et al. 2011, Nuhn et al. 2013, Gelardi et al. 2014, Wu et al. 2014).


Empire Genomic's IDProof High Fidelity Polymerase
was used in this publication.



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