Pleosporales » Roussoellaceae

Elongatopedicellata

Elongatopedicellata Jin F. Zhang, Jian K. Liu, K.D. Hyde & Zou Y. Liu, in Ariyawansa et al., Fungal Diversity: 10.1007/s13225-015-0346-5, [92] (2015).

 Index Fungorum number: IF 551484; Facesoffungi number: FoF 00959, 1 morphological species (Species Fungorum 2022), 1 species with molecular data.

Saprobic on the dead wood. Sexual morph: Ascomata solitary to gregarious, scattered, immersed or erumpent, uniloculate, subglobose to obpyriform, coriaceous, with papillate ostiole. Peridium composed of several layers of brown to dark brown, thick-walled cells, arranged in a textura angularis. Hamathecium composed of 1–2 μm wide, filiform pseudoparaphyses, anastomosing between and above the asci, embedded in a gelatinous matrix. Asci 8-spored, bitunicate, fissitunicate, fusiform-clavate, with a long pedicel, apically rounded, with a well-developed ocular chamber. Ascospores 1–3 overlapping seriate, hyaline, fusiform, uniseptate, constricted at the septum, upper cell shorter and wider, lower cell long and narrow. Asexual morph: Unknown (adapted from Ariyawansa et al. 2015).

 Type species: Elongatopedicellata lignicola Jin F. Zhang, Jian K. Liu, K.D. Hyde & Zi Y. Liu

Notes: Elongatopedicellata is characterised by solitary to gregarious ascomata, fusiform-clavate 8-spored asci and fusiform, uniseptate ascospores. Elongatopedicellata resembles Didymosphaeria but is phylogenetically closely related to Roussoellaceae. Elongatopedicellata differs from other members in Roussoellaceae in having cellular pseudoparaphyses and uneven ascospores enclosed in a gelatinous sheath, while Roussoellaceae has trabeculate pseudoparaphyses and brown, 2-celled, ornamented ascospores (Liu et al. 2014). Elongatopedicellata is morphologically and phylogenetically a distinct genus in Roussoellaceae. LSU and SSU sequence data are available for Elongatopedicellata in GenBank.

 

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