Pseudosplanchnonema Chethana & K.D. Hyde, 2015

Chethana, K. W. Thilini, Liu, Mei, Ariyawansa, Hiran A., Konta, Sirinapa, Wanasinghe, Dhanushka N., Zhou, Ying, Yan, Jiye, Camporesi, Erio, Bulgakov, Timur S., Chukeatirote, Ekachai, Hyde, Kevin D., Bahkali, Ali H., Liu, Jianhua & Li, Xinghong, 2015, Splanchnonema-like species in Pleosporales: introducing Pseudosplanchnonema gen. nov. in Massarinaceae, Phytotaxa 231 (2), pp. 133-144 : 138-139

Pseudosplanchnonema Chethana & K.D. Hyde , gen. nov.

Index Fungorum number: IF551021, Facesoffunginumber: FoF 00568.

Etymology: —The specific generic epithet Pseudosplanchnonema is given based on its morphological resemblance to the genus Splanchnonema .

Type species:— Pseudosplanchnonema phorcioides (I. Miyake) Chethana, Camporesi & K.D. Hyde.

Saprobic or parasitic on dead branches or wood. Sexual morph: Pseudostromata with immersed, perithecial ascomata solitary, scattered, gregarious, subglobose to globose, verruculose, dark brown to black, ostiolate. Ostiole short, papillate, opening to exterior through bark. Peridium comprising several-layers, outer layer composed of dark brown to reddish brown, heavily pigmented, thick-walled cells of textura angularis, inner layer comprising hyaline to pale brown, thin-walled cells. Hamathecium comprising filiform, broad, pseudoparaphyses, anastomosing above the asci, embedded in a gelatinous matrix. Asci 8-spored, bitunicate, fissitunicate, cylindrical to clavate, with a short pedicel and an ocular chamber best seen in immature asci. Ascospores overlapping, uni to biseriate, fusiform to ellipsoidal, widest near the centre, with acute rounded ends, sometimes slightly curved, hyaline to pale brown when young, dark brown at maturity, 1-septate, constricted at the septum, sometimes with pseudosepta, smooth-walled, surrounded by a mucilaginous sheath. Asexual morph: Coelomycetous, phoma-like. Conidiomata pycnidial, solitary or aggregated, slightly erumpent, oval to globose, with a verruculose wall, initially brown and becoming black at maturity. Pycnidial wall comprising multi-layered, brown, outer cells of textura angularis and thin, hyaline, inner cells. Conidiophores reduced to conidiogenous cells. Conidiogenous cells enteroblastic, phialidic, hyaline, smooth-walled, formed from the inner layer of the pycnidial wall. Conidia subglobose to ellipsoidal, hyaline, aseptate, straight to curved, smooth and thin-walled, with rounded ends.