Tympanopsis Starbäck, Bih. K. svenska VetenskAkad. Handl., Afd. 3 19(no. 2): 24 (1894)
Hypocreomycetidae, Coronophorales, Scortechiniaceae, Tympanopsis
Index Fungorum number: IF 5651; 5 morphological species (Species Fungorum 2020); 1 species with sequence data.
Saprobic on wood. Sexual morph: Subiculum composed of numerous, brown to dark brown, branched, septate hyphae. Ascomata scattered to gregarious, superficial, sitting on a subiculum, carbonaceous to coriaceous, black, turbinate, globose to subglobose, the apex collapsing when dry, tuberculate, glabrous, lacking ostioles, with a central, conical Quellkörper. Peridium usually outer layer composed of carbonaceous, black tissue; inner layer composed of membranaceous, brown to hyaline cells of textura angularis to textura prismatica, sometimes Munk pores present. Paraphyses absent. Asci 8-spored, arising from a hyaline placenta-like tissue, radially extending into the locule around the Quellkörper from the base, unitunicate, clavate, pedicellate, apex rounded, without apical ring, evanescent. Ascospores bi-seriate to overlapping, hyaline to brown or olivaceous brown, ellipsoidal to oval, straight or curved, aseptate, smooth-walled, guttulate. Asexual morph: Undetermined (copied from Huang et al. 2021).
Type species: Tympanopsis euomphala (Berk. & M.A. Curtis) Starbäck, Bih. K. svenska VetenskAkad. Handl., Afd. 3 19(no. 2): 24 (1894)
Notes: Tympanopsis euomphala is characterised by pyriform asci with ellipsoid ascospores and was considered as a member of Coronophoraceae (Starbäck 1894, Nannfeldt 1975, von Arx 1981). It was considered as a member of Scortechiniaceae based on multi-gene analysis by Mugambi & Huhndorf (2010) (copied from Hyde et al. 2020).
Species illustrated in this entry:
Tympanopsis euomphala (Berk. & M.A. Curtis) Starbäck