Periconia Tode, Fung. mecklenb. sel. (Lüneburg) 2: 2 (1791).

MycoBank number: MB 9263; Index Fungorum number: IF 9263; Facesoffungi number: FoF 06658; 116 morphological species (Species Fungorum 2020), 22 species with molecular data.

Type speciesPericonia lichenoides Tode Fung. mecklenb. sel. (Lüneburg) 2: 2 (1791).

Notes – Most Periconia species are only known as asexual morphs, characterized by macronematous, branched or unbranched conidiophores, blastic, terminal or intercalary conidiogenous cells, and catenate, sphaerical to ellipsoidal or oblong, aseptate conidia usually forming a sphaerical head (Ellis 1971). A few species, such as P. homothallica and P. pseudodigitata, are known as sexual morphs, characterized by scattered, globose ascomata with a central ostiole, 8-spored, fissitunicate or cylindrical asci with a shallow chamber and short stalk, and hyaline, fusiform, 1-septate ascospores with an entire sheath (Tanaka et al. 2015). Several genera and species, such as Bambusistroma, Flavomyces, Noosia, and Sporidesmium tengii were present in the Periconia lineage in the phylogenetic analyses (Tanaka et al. 2015, Liu et al. 2017b, Thambugala et al. 2017b, Hyde et al. 2018, Jayasiri et al. 2019, Phookamsak et al. 2019), which indicated that Periconia may be polyphyletic (Tanaka et al. 2015).