Bicrouania
Bicrouania Kohlm. & Volkm. -Kohlm., Mycol. Res. 94(5): 685 (1990).
Index Fungorum number: IF 25435; Facesoffungi number: FoF 00763; 1 morphological species (Species Fungorum 2022), no molecular data available.
Saprobic on marine algae. Sexual morph: Ascomata gregarious, immersed, erumpent to superficial, black, globose to subglobose, coriaceous, ostiolate, papillate or epapillate, periphysate. Peridium thick at apex, thinner at base, 2-layered. Hamathecium composed of long, colourless, branching trabeculate pseudoparaphyses. Asci 8-spored, bitunicate, fissitunicate, cylindrical to clavate, pedicellate, lacking an ocular chamber. Ascospores uniseriate or partially overlapping uni-seriate, reddish brown to brown, ellipsoid with pointed to rounded ends, uniseptate, constricted at darkened septum, with lower narrow and longer cell, smooth-walled. Asexual morph: Unknown (adapted from Tian et al. 2015).
Type species: Bicrouania maritima (P. Crouan & H. Crouan) Kohlm. & Volkm.-Kohlm.
Notes: Bicrouania is characterised by gregarious, immersed, erumpent to superficial, black, globose to subglobose ascomata, cylindrical to clavate, pedicellate asci and uniseriate or partially overlapping uni-seriate, reddish brown to brown, ellipsoid with pointed to rounded ends, uniseptate ascospores. Bicrouania maritima was previously known as Didymosphaeria maritima (Kohlmeyer & Volkmann-Kohlmeyer 1990). Bicrouania is treated as a distinct genus in Melanommataceae based on the melanommataceous character and trabeculate pseudoparaphyses but this placement is doubtful as molecular data is lacking (Lumbsch & Huhndorf 2007, 2010, Jones et al. 2009, Zhang et al. 2012, Hyde et al. 2013, Wijayawardene et al. 2014).
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