Melanocucurbitaria
Melanocucurbitaria Wanas., Gafforov & K.D. Hyde, in Wanasinghe et al., Fungal Diversity: 10.1007/s13225-018-0395-7, [87] (2018).
Index Fungorum number: IF 554158; Facesoffungi number: FoF 03999, 1 morphological species (Species Fungorum 2022), 1 species with molecular data.
Saprobic on dead twigs in terrestrial habitats. Sexual morph: Ascomata scattered to gregarious, immersed or semi erumpent, coriaceous, black, globose to subglobose, ostiolate. Ostiole central, with a papilla. Peridium composed of 3–5 layers, with brown to reddish brown cells of textura angularis, cells towards the inside lighter and at the outside, darker, sometimes fusing and indistinguishable from the host tissues. Hamathecium comprising numerous, filamentous, branched septate, pseudoparaphyses. Asci 8-spored, bitunicate, fissitunicate, cylindrical, with a pedicel, apically rounded, with an ocular chamber. Ascospores uniseriate, sometimes overlapping, muriform, mostly ellipsoidal, with 6–8 transverse septa and 2–4-longitudinal septa, slightly constricted at the middle septum, initially hyaline, becoming golden brown to brown at maturity, asymmetrical, with broadly rounded ends, with or without a mucilaginous sheath. Asexual morph: Unknown (adapted from Wanasinghe et al. 2018).
Type species: Melanocucurbitaria uzbekistanica Wanas., Gafforov & K.D. Hyde
Notes: Melanocucurbitaria resembles Gemmamyces, Muriformistrickeria, Pseudostrickeria and Praetumpfia in having muriform ascospores in Melanommataceae. Melanocucurbitaria can be easily distinguished by the reasonably large ascomata and thin peridium. Molecular markers available for Melanocucurbitaria are ITS, LSU, SSU and TEF-1.
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