Guttulispora
Guttulispora Thambug., Qing Tian & K.D. Hyde, Fungal Divers.74: 220 (2015).
Index Fungorum number: IF 551238; Facesoffungi number: FoF 00804, 1 morphological species (Species Fungorum, 2022), 1 species with molecular data.
Saprobic on dead branches in terrestrial habitats. Sexual morph: Ascomata solitary or scattered, immersed, coriaceous to carbonaceous, dark brown to black, globose to subglobose, ostiolate. Ostiole central, papillate, with a small crest-like apex and an irregular pore-like opening, beavered by gelatinous tissue, composed of lightly pigmented, pseudoparenchymatous cells. Peridium composed of a single layer with dark to reddish brown, thick-walled cells of textura angularis, cells towards the inside lighter, at the outside, darker, somewhat compressed, fusing and indistinguishable from the host tissues. Hamathecium comprising 1–2μm wide, septate, branched, cellular pseudoparaphyses, situated between and above the asci, embedded in a gelatinous matrix. Asci 8- spored, bitunicate, fissitunicate, cylindrical, short pedicellate, apically rounded with an ocular chamber. Ascospores uniseriate, partially overlapping, hyaline when immature and becoming brown when mature, ellipsoid to fusiform, 3-septate, constricted at each septum, upper part slightly wider, guttulate at each cell, lacking a mucilaginous sheath. Asexual morph: Undetermined (Adapted from Thambugala et al., 2015).
Type species: Guttulispora crataegi Qing Tian, Thambug., Camporesi & K.D. Hyde
Notes: Guttulispora was introduced by Thambugala et al. (2015) with G. crataegi as
the type species. Guttulispora is unique in having small, brown, guttulate, 3- septate ascospores, restricted at each septum. Guttulispora is morphologically and phylogenetically a distinct and well-defined genus in Lophiostomataceae. Molecular markers available for Guttulispora include LSU, SSU, ITS and TEF-1.
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