Paramicrothecium Crous, Krimhilde Müller, Siepe, Reul & Osieck, gen. nov.
Index Fungorum number: MB 841831; Facesoffungi number: FoF
Etymology: Name refers to its similarity to Microthecium.
Classiﬁcation: — Ceratostomataceae, Coronophorales, Sor dariomycetes.
Ascomata superﬁcial to immersed in epidermis, globose solitary, hyaline, becoming darker brown (due to maturing ascospores); wall translucent, of textura epidermoidea on surface, of 3 – 6 layers of textura prismatica in section, wall covered with short, stubby, thick-walled setae; ascomata initially cleistothecial, but once mature, opening via slightly papillate apex with central osti- ole, and exuding a black cirrhus of ascospores. Asci unitunicate, clavate to subcylindrical with a long stipe, (2 –)4(– 6)-spored, not staining in Melzer’s reagent. Ascospores ellipsoid, medium brown, becoming dark brown, smooth- and thick-walled, with 2 – 3 large guttules, and a large refractive germ pore at each polar end, somewhat truncate. Mycelium consisting of hyaline, smooth-walled, branched, septate hyphae. Conidiophores reduced to conidiogenous cells that occur singly or more com- monly in clusters. Conidiogenous cells hyaline, smooth-walled, arising from superﬁcial mycelium, ampulliform, consisting of an obovoid venter, and cylindrical neck. Conidia hyaline, smooth- and thin-walled, guttulate, aseptate, shortly clavate, apex obtuse, tapering to truncate hilum, produced in short, false chains that slime down into a globoid mass.
Type species: Paramicrothecium sambuci Crous, Krimhilde Müller, Siepe, Reul & Osieck