Pleosporales » Didymosphaeriaceae

Verrucoconiothyrium

Verrucoconiothyrium Crous, in Crous et al., Sydowia 67: 110 (2015).

 Index Fungorum number: IF 812549; Facesoffungi number: FoF 08241, 5 morphological species (Species Fungorum 2022), 5 species with molecular data.

Saprobic on host. Sexual morph: Unknown. Asexual morph: Mycelium immersed, hyphae septate, medium brown, finely verruculose, forming intercalary and terminal chains of globose chlamydospores. Conidiomata pycnidial, subepidermal, globose, separate, brown; wall consisting of 3–4 layers of brown cells of textura angularis. Conidiogenous cells discrete, smooth, hyaline to pale olivaceous, doliiform to ampulliform, proliferating percurrently. Conidia medium brown, thick-walled, verruculose, 0–1-septate, ellipsoidal to subcylindrical (adapted from Crous et al. 2015).

Type species: Verrucoconiothyrium nitidae (Crous & Denman) Crous

Notes: Verrucoconiothyrium is characterised by finely verruculose, medium brown mycelium, globose brown conidiomata, hyaline to pale olivaceous conidiogenous cells and verruculose, 0–1-septate conidia. Verrucoconiothyrium differs from Coniothyrium in having verrucose conidia. Phylogenetically, Verrucoconiothyrium is a distinct and well-supported genus in Didymosphaeriaceae. Molecular markers available for Verrucoconiothyrium are ITS, LSU, BTUB, TEF-1 and RPB2.

 

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