Oidiosporium Sastoque, Cano & Stchigel 2025, gen. nov.

Oidiosporium Sastoque, Cano & Stchigel, gen. nov. MycoBank MB 850913. Etymology: From Latin ovum -, egg, - idium -, a diminutive suffix, and - sporium, spore, because the fungus produces thallic conidia similar to those of the order Erysiphales (= oidia). Type species: Oidiosporium botulisporum Sastoque, Cano & Stchigel Mycelium abundant, composed of hyaline to brown or reddish-brown, septate, branched, smooth- and thin- to moderately thick-walled hyphae when pigmented, often coiled. Conidiophores absent. Conidia holothallic, aseptate, hyaline or brown to reddish-brown, smooth- and thin-walled to moderately thick-walled, guttulate, subglobose, ellipsoidal, broadly fusiform, barrel-shaped or sausage-shaped, flattened at both ends but without visible scars, formed by remodelling of pre-existing hyphae sections, secession schizolytic, produced in short to long chains.