Flabellascoma

Flabellascoma A. Hashim., K. Hiray. & Kaz. Tanaka, in Hashimoto et al., Stud. Mycol. 90: 167 (2018).

Index Fungorum number: IF 823133; Facesoffungi number: FoF 08275, 4 morphological species (Species Fungorum 2022), 4 species with molecular data.

Saprobic on host. Sexual morph: Ascomata scattered, immersed, subglobose to ellipsoidal. Ostiolar neck elongated, laterally compressed. Peridium composed of elongated, brown cells. Pseudoparaphyses septate, branched and anastomosed. Asci bitunicate, fissitunicate, cylindrical-clavate, 8-spored. Ascospores fusiform, hyaline, uniseptate, with a narrow bipolar sheath. Asexual morph: Conidiomata pycnidial, globose to subglobose. Peridium composed of subglobose to rectangular, brown cells. Conidiophores absent. Conidiogenous cells holoblastic, cylindrical or ampliform, hyaline, smooth. Conidia subglobose with rounded ends, hyaline, smooth, aseptate (adapted from Hashimoto et al. 2018).

Type species: Flabellascoma minimum A. Hashim., K. Hiray. & Kaz. Tanaka

Notes: Flabellascoma is characterised by scattered, immersed, subglobose to ellipsoidal ascomata, cylindrical-clavate, 8-spored asci, and fusiform, hyaline, uniseptate ascospores. The asexual morph is characterised by pycnidial, globose to subglobose conidiomata, holoblastic, cylindrical or ampliform conidiogenous cells, and subglobose conidia with rounded ends. Flabellascoma resembles Pseudolophiostoma in having ascomata with a well-developed, crest-like ostiolar neck, and an ascomatal wall of constant thickness (Hashimoto et al. 2018). Flabellascoma differs from Pseudolophiostoma in that the latter has a peridium composed of 1 zone compared to the former which has 2 zones (Hashimoto et al. 2018). Flabellascoma is a distinct and well-supported genus in Lophiostomataceae. Molecular markers available for Flabellascoma are ITS, LSU, SSU, BTUB, RPB2 and TEF-1.

Flabellascoma

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