Halobyssothecium caohaiense L.L. Liu, J. Yang & Z.Y. Liu, sp. nov.
MycoBank number: MB 559451; Index Fungorum number: IF 559451; Facesoffungi number: FoF 12784;
Etymology: referring to the collecting site at Caohai Lake.
Holotype: GZAAS 20-0377
Saprobic on decaying, submerged wood in freshwater habitats. Sexual morph: Undetermined. Asexual morph: Conidiomata pycnidial, solitary or aggregated, globose to subglobose, 174–197 × 206–240 μm, glabrous, superficial, or sub-immersed, with a papillate and a blunt ostiole, dark brown to black, membranous. Conidiomatal wall 17.5–35.5 μm thick, composed of thick-walled, dark brown cells of textura angularis, becoming pale brown to hyaline cells towards inner layers. Conidiophores reduced to conidiogenous cells. Conidiogenous cells monoblastic, hyaline, smooth, ampulliform to doliiform, 4.7–11 × 1–5.5 μm ( = 7 × 2.5 μm, n = 20). Conidia hyaline, ovoid, ellipsoidal to cylindrical, thin-walled, smooth, mainly aseptate, 7.4–11.7 × 3.7–5.3 μm ( = 9.4 × 4.4 μm, n = 40), guttulate.