New studies on Apiospora (Amphisphaeriales, Apiosporaceae): epitypification of Sphaeriaapiospora, proposal of Ap.marianiae sp. nov. and description of the asexual morph of Ap.sichuanensis.

In the present work, an epitype for Sphaeriaapiospora, the basionym of the type species of the genus Apiospora, Apiosporamontagnei, is selected among collections growing in the host plant species reported in the original protologue, Arundomicrantha. Most samples obtained from localities near that of the lectotype (Perpignan, France) belong to the same species, which is not significantly different from the clade previously named Ap.phragmitis, suggesting that this name is a later synonym of Ap.montagnei. In addition, the name Ap.marianiae is here proposed to accommodate a newly discovered species found in the Balearic Islands (Spain), and the asexual state of Ap.sichuanensis is described for the first time from samples growing in the same islands.

Erratum: Corrigendum: Pintos Á, Alvarado P (2022) New studies on Apiospora (Amphisphaeriales, Apiosporaceae): epitypification of Sphaeriaapiospora, proposal of Ap.marianiae sp. nov. and description of the asexual morph of Ap.sichuanensis. MycoKeys 92: 63-78. https://doi.org/10.3897/mycokeys.92.87593.

[This corrects the article DOI: 10.3897/mycokeys.92.87593.].

Six new species of Arthrinium from Europe and notes about A.caricicola and other species found in Carex spp. hosts.

Several new Arthrinium specimens were collected from various locations in Mediterranean and temperate Europe. A collection of the type species, A.caricicola, was obtained from dead leaves of Carexericetorum in Berlin. Sequences of four genetic markers, ITS, 28S rDNA, tef1 and tub2 were produced from almost all collections and analyzed with those available in public databases. Results are employed to support six new species: A.balearicum, A.descalsii, A.esporlense, A.ibericum, A.italicum and A.piptatheri. The type species, A.caricicola, is related to other species occurring on Carex sp.; these might represent an independent lineage from Apiospora and the remaining species of Arthrinium. Finally, the sexual morph of A.marii is described and illustrated for the first time.