Lindgomyces
Lindgomyces K. Hiray., Kaz. Tanaka & Shearer, in Hirayama et al., Mycologia 102(3): 733 (2010).
Index Fungorum number: IF 515188; Facesoffungi number: FoF 08268, 13 morphological species (Species Fungorum 2022), 13 species with molecular data.
Saprobic on submerged woody plant. Sexual morph: Ascomata scattered to clustered, semi-immersed to nearly superficial, ellipsoidal or lenticular, subglobose to globose, uniloculate, glabrous, dark brown to black, with ostiolate papilla. Peridium composed of hyaline to brown, small, thin-walled cells, sometimes poorly developed at the base. Pseudoparaphyses numerous, cellular, hyaline, septate, branched, anastomosing. Asci 8-spored bitunicate, fissitunicate, cylindrical to clavate, sessile to minutely pedicellate, rounded at the apex, with an ocular chamber. Ascospores bi- to tri-seriate, fusiform to cylindrical, straight to slightly curved, hyaline to pale brown, with a median primary septum, smooth or finely verruculose, thin-walled, usually covered with a sheath or bearing bipolar mucilaginous appendages. Senescent ascospores brown, > 3-septate. Asexual morph: Unknown (adapted from Hirayama et al. 2010, Dong et al. 2020).
Type species: Lindgomyces ingoldianus (Shearer & K.D. Hyde) K. Hiray., Kaz. Tanaka & Shearer
Notes: Lindgomyces ingoldianus was previously known as Massarina ingoldiana but was not congeneric with the type species of Massarina (Hirayama et al. 2010). Lindgomyces is characterised by scattered to clustered, semi-immersed to superficial ascomata, cylindrical to clavate, sessile to minutely pedicellate asci and fusiform to cylindrical, hyaline to pale brown ascospores with a sheath or bipolar mucilaginous appendages. Lindgomyces taxa have been reported from freshwater habitats (Dong et al. 2020). Lindgomyces morphologically resembles Massarina but differs in having a well-developed clypeus and ascospores with a conspicuous gelatinous sheath. Lindgomyces is also similar to Lophiostoma (L. macrostomum) but differs in that the ascomata lack a slit-like ostiole, lophiostomatoid peridium and narrow ascospores as observed in Lophiostoma (Hyde et al. 2002). Lindgomyces is morphologically and phylogenetically a distinct genus in Lophiostomataceae. Molecular markers available for Lindgomyces include ITS, LSU and SSU.
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