Pleosporales » Phaeosphaeriaceae

Dactylidina

Dactylidina Wanas., Camporesi & K.D. Hyde, in Wanasinghe et al., Fungal Diversity 89: 107 (2018).

 Index Fungorum number: IF 554173; Facesoffungi number: FoF 04015, 2 morphological species (Species Fungorum 2022), 2 species with molecular data.

Saprobic in terrestrial habitats. Sexual morph: Ascomata immersed to erumpent, solitary, scattered, globose or subglobose, dark brown to black, coriaceous, ostiolate. Ostiole papillate, blackish-brown to black, smooth, comprising brown cells. Peridium with 2–3 layers, heavily pigmented, thin-walled, comprising brown to dark brown cells of textura angularis. Hamathecium comprising numerous, filamentous, branched, septate, pseudoparaphyses. Asci 8-spored, bitunicate, fissitunicate, cylindric-clavate to clavate, short pedicellate, thick-walled at the apex, with minute ocular chamber. Ascospores overlapping 1–2- seriate, ellipsoidal to subfusiform, muriform, upper part wider than the lower part, initially hyaline, becoming yellowish-brown at maturity, with 5–6-transverse septate and 1-longitudinal septum except at the end cells, constricted at the septa, conical and rounded at the ends, with smooth surface, with or without being surrounded by a thick mucilaginous sheath. Asexual morph: Unknown (adapted from Wanasinghe et al. 2018).

 Type species: Dactylidina dactylidis (Wanas., Camporesi, E.B.G. Jones & K.D. Hyde) Wanas. & K.D. Hyde

Notes: Dactylidina is characterised by immersed to erumpent, solitary ascomata, cylindric-clavate to clavate asci, and overlapping 1–2- seriate, ellipsoidal to subfusiform, muriform ascospores with or without a thick mucilaginous sheath. Wanasinghe et al. (2018) collected Allophaeosphaeria dactylidis from Italy on Dactylis and synonymized it as Dactylidina dactylidis. Dactylidina is a distinct genus in Phaeosphaeriaceae. Molecular markers available for Dactylidina include ITS, LSU, SSU, TEF-1 and RPB2.

 

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