Crassimassarina
Crassimassarina A. Hashim. & Kaz. Tanaka, in Hashimoto et al., Persoonia 39: 61 (2017).
Index Fungorum number: IF 819243; Facesoffungi number: FoF 08287; 1 morphological species (Species Fungorum 2022), 1 species with molecular data.
Saprobic on host. Sexual morph: Ascomata solitary to grouped, immersed to erumpent, subglobose. Ostiolar neck papillate, without slit-like ostiole, composed of carbonaceous, thick-walled, black cells. Peridium composed of rectangular, thin-walled cells. Pseudoparaphyses trabeculate, septate, branched and anastomosed. Asci bitunicate, fissitunicate, cylindrical, 8-spored. Ascospores broadly fusiform with rounded ends, straight, uniseptate, hyaline, smooth. Asexual morph: Conidiomata pycnidial, globose to subglobose, scattered, semi-immersed, solitary, black, ostiolate. Peridium composed of subglobose to rectangular, brown cells. Conidiophores absent. Conidiogenous cells holoblastic, cylindrical, hyaline. Conidia cylindrical with rounded ends, hyaline, smooth, multiseptate (adapted from Hashimoto et al. 2017).
Type species: Crassimassarina macrospora A. Hashim. & Kaz. Tanaka
Notes: Crassimassarina is characterised by immersed to erumpent subglobose ascomata, cylindrical, 8-spored asci, and broadly fusiform, uniseptate ascospores with rounded ends. The asexual morph is characterised by globose to subglobose conidiomata, holoblastic, cylindrical conidiogenous cells and cylindrical, multi-septate, smooth conidia with rounded ends. Crassimassarina resembles Massarina in having large, immersed ascomata with a short papillate ostiolar neck and large ascospores (Barr 1982; Tanaka et al. 2005, 2015). Crassimassarina differs from Massarina in having a well-developed peridium (Hashimoto et al. 2017). Hashimoto et al. (2017) reported that the asexual morph of Crassimassarina is similar to that of Stagonospora in having pycnidial conidiomata, conidiophores reduced to conidiogenous cells, and multiseptatecylindrical conidia but the former has phialidic conidiogenous cells (Quaedvlieg et al. 2013, Tanaka et al. 2015). Crassimassarina can be differentiated from similar genera in Lophiotremataceae by the absence of a slit-like ostiole in the ascomata, a peridium comprising rectangular, thin-walled carbonaceous cells and multi-septate, cylindrical, large conidia (Hashimoto et al. 2017). Molecular markers available for Crassimassarina are ITS, LSU, SSU, RPB2 and TEF-1.
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