Abstract
Healy, R.A., Bonito, G. & Trappe, J.M. 2009. Calongea, a new genus of truffles in the Pezizaceae (Pezizales). Anales Jard. Bot. Madrid 66S1: 25-32. Phylogenetic analysis of the ITS and LSU rDNA of Pachyphloeus species from Europe and North America revealed a new truffle genus. These molecular analyses plus sequences downloaded from a BLAST search in GenBank indicated that Pachyphloeus prieguensis is within the Pezizaceae but well outside of the genus Pachyphloeus. Morphological differences in the peridial and glebal hyphae and spores distinguish this genus from Pachyphloeus. We here propose the monotypic new genus Calongea, with the type species C. prieguensis comb. nov., in honor of Prof. Francisco de Diego Calonge, who has long studied the truffle fungi of Spain and participated in describing the type species of Calongea.
Highlights
Phylogenetic analysis of the ITS and large subunit (LSU) rDNA of Pachyphloeus species from Europe and North America revealed a new truffle genus. These molecular analyses plus sequences downloaded from a BLAST search in GenBank indicated that Pachyphloeus prieguensis is within the Pezizaceae but well outside of the genus Pachyphloeus
One challenge to identifying or describing truffles is that their relationships are confused by convergent morphologies. In their adaptation to a sequestrate habit, they gain features such as odors adapted for spore dispersal through mycophagy and lose features such as apothecia and forcible spore discharge adapted for aerial spore dispersal
During a phylogenetic study of Pachyphloeus species with use of ITS and LSU rDNA, P. prieguensis sequences consistently fell outside of the genus when analyzed with maximum parsimony and maximum likelihood optimization criteria
Summary
Francisco de Diego Calonge, who has long studied the truffle fungi of Spain and participated in describing the type species of Calongea. During a phylogenetic study of Pachyphloeus species with use of ITS and LSU rDNA, P. prieguensis sequences consistently fell outside of the genus when analyzed with maximum parsimony and maximum likelihood optimization criteria.
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