Striatiguttula
Striatiguttula S.N. Zhang, K.D. Hyde & J.K. Liu, in Zhang et al., MycoKeys 49: 111 (2019).
Index Fungorum number: IF 828273; Faceoffungi number: FoF 05033; 2 morphological species (Species Fungorum, 2022), 2 species with molecular data.
Saprobic on palms in mangrove habitats. Sexual morph: Ascomata black, scattered to gregarious, immersed to erumpent, with a papilla or short to long neck, sometimes stromatic, clypeate or not, in vertical section, ampuliform, subglobose or conical, with glabrous or somewhat interwoven pale brown hyphae or setae, lying at apex of the neck. Ostiole periphysate. Peridium composed cells of textura angularis. Wall of the clypeus composed of cells of textura epidermoidea and dark brown host tissue. Hamathecium numerous, pseudoparaphyses, embedded in a gelatinous matrix. Asci 8-spored, bitunicate, fissitunicate, cylindric-clavate, pedicellate, apical rounded with an ocular chamber. Ascospores hyaline to brown, overlapping to biseriate or triseriate, fusiform to ellipsoidal, 1–3-septate, and constricted at central septum, the middle cells slightly swollen towards the central septum, the end cells slightly paler or not, striate, guttulate, surrounded by mucilaginous sheath. Asexual morph: Undetermined (Adapted from Zhang et al., 2019).
Type species: Striatiguttula nypae S.N. Zhang, K.D. Hyde & J.K. Liu
Notes: Striatiguttula was introduced by Zhang et al. (2019) with S. nypae as type species. Striatiguttula is characterized by black, scattered to gregarious, immersed to erumpent ascomata, fissitunicate, cylindric-clavate asci and cylindric-clavate, pedicellate ascospores. Striatiguttula is morphologically and phylogenetically a distinct and well-defined genus in Striatiguttulaceae. Molecular markers available for Striatiguttula are LSU, SSU, ITS, RPB2 and TEF-1.
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