Ochronectria Rossman & Samuels

Ochronectria Rossman & Samuels, emend V. S. Silva & Jayaward. Classification. Bionectriaceae, Hypocreales, Hypocreomycetidae, Sordariomycetes. Remarks. Ochronectria was established by Rossman et al. (1999), accommodating Ochronectria calami as the type species. The genus features subglobose to globose ascomata that become cupulate upon drying, peridium with three distinct layers, clavate asci, and fusiform ascospores containing guttules (Rossman et al. 1999; Lechat 2010; Li et al. 2016). Three species are accepted under Ochronectria, with no report on the asexual morph (Index Fungorum 2025). Discovery of the asexual form of Ochronectria thailandica in this study reveals the asexual morph of Ochronectria. Therefore, the genus description is emended here with general asexual morphology. Description. Sexual morph: as described by the original description, Rossman et al. (1999) Asexual morph: Hyphomycetous. Colonies on the host are solitary to gregarious, and the vegetative mycelium is superficial. Conidiophores erect, mononemotous, unbranched, 2 - septate, hyaline, smooth-walled. Conidiogenous cells elongate, hyaline, holoblastic, and apically produce monoblasitic conidia. Conidia aseptate, ellipsoidal to cylindrical, rarely ovoid, hyaline, smooth-walled.