Abstract
Abstract Mycena sect. Calodontes is a taxonomically intricate group comprising phylospecies so far not recognizable using a morphological recognition approach. In this study we re-examine and sequence Iberian material of Porpoloma aranzadii, including the type specimen. The dextrinoid lamellar trama and mycelial hyphae in the type specimen, the latter covered with crystals, suggest a placement in Mycena sect. Calodontes. The type specimen of M. pura f. brunnea is also examined and sequenced. We constructed an ITS dataset representing all European phylospecies reported in previous studies, and we coded indel information. Our phylogenetic analyses recovered strongly supported clades for all the phylospecies and indel information provides additional resolution in phylospecies delimitation. Porpoloma aranzadii sequences are encompassed in the M. dura clade and their synonymy is proposed. Further information on the macroscopic variability of M. dura is obtained. Within sect. Calodontes, M. dura is characterize...
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