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A phylogenetic framework for reassessing generic concepts and species delimitation in the lichenized family Trypetheliaceae (Ascomycota: Dothideomycetes)

  • Robert LÜCKING (a1) (a2), Matthew P. NELSEN (a3), André APTROOT (a4), Roselvira BARILLAS DE KLEE (a5), Paulina A. BAWINGAN (a6), Michel N. BENATTI (a7), Nguyen Quoc BINH (a8), Frank BUNGARTZ (a9), Marcela E. S. CÁCERES (a10), Luciana da Silva CANÊZ (a11), José-Luis CHAVES (a12), Damien ERTZ (a13), Rhina Esmeralda ESQUIVEL (a14), Lidia Itati FERRARO (a15), Alfredo GRIJALVA (a16), Cécile GUEIDAN (a17) (a18), Jesús E. HERNÁNDEZ M. (a19), Allison KNIGHT (a20), H. Thorsten LUMBSCH (a2), Marcelo P. MARCELLI (a7), Joel A. MERCADO-DÍAZ (a2) (a3), Bibiana MONCADA (a21) (a22), Eduardo A. MORALES (a23), Khwanruan NAKSUWANKUL (a24), Thelma OROZCO (a16), Sittiporn PARNMEN (a25), Eimy RIVAS PLATA (a2), Noris SALAZAR-ALLEN (a26), Adriano A. SPIELMANN (a11) and Nohemy VENTURA (a14)...
Abstract

We provide an expanded and updated, 2-locus phylogeny (mtSSU, nuLSU) of the lichenized fungal family Trypetheliaceae, with a total of 196 ingroup OTUs, in order to further refine generic delimitations and species concepts in this family. As a result, the following 15 clades are recognized as separate genera, including five newly established genera: Aptrootia, Architrypethelium, Astrothelium (including the bulk of corticate species with astrothelioid ascospores; synonyms: Campylothelium, Cryptothelium, Laurera), Bathelium s. str. (excluding B. degenerans and relatives which fall into Astrothelium), the reinstated Bogoriella (for tropical, lichenized species previously placed in Mycomicrothelia), Constrictolumina gen. nov. (for tropical, lichenized species of Arthopyrenia), Dictyomeridium gen. nov. (for a subgroup of species with muriform ascospores previously placed in Polymeridium), Julella (provisionally, as the type species remains unsequenced), Marcelaria (Laurera purpurina complex), Nigrovothelium gen. nov. (for the Trypethelium tropicum group), Novomicrothelia gen. nov. (for an additional species previously placed in Mycomicrothelia), Polymeridium s. str., Pseudopyrenula, Trypethelium s. str. (T. eluteriae group), and Viridothelium gen. nov. (for the Trypethelium virens group). All recognized genera are phenotypically characterized and a discussion on the evolution of phenotypic features in the family is given. Based on the obtained phylogeny, species delimitations are revised and the importance of characters such as thallus morphology, hymenial inspersion, and secondary chemistry for taxonomic purposes is discussed, resulting in a refined species concept.

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      A phylogenetic framework for reassessing generic concepts and species delimitation in the lichenized family Trypetheliaceae (Ascomycota: Dothideomycetes)
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      A phylogenetic framework for reassessing generic concepts and species delimitation in the lichenized family Trypetheliaceae (Ascomycota: Dothideomycetes)
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Email: r.luecking@bgbm.org
References
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