Thelebolaceae
Facesoffungi number: FoF 05960
Taxa are saprobic on dead plant material or herbivore dung, rarely plant parasitic. Asomata are absent, apothecial or cleistothecial. When ascomata absent, asci formed directly on fertile hyphae without an exciple, paraphyses are absent, asci are 8-spored, sessile, subglobose to ellipsoidal and arising from croziers and ascospores are ellipsoid to fusiform and hyaline (Stchigel et al. 2001, de Menezes et al. 2017, Brummelen 1985). Apothecia are turbinate, cylindrical, obconical, pulvinate, or cupulate, sessile and glabrous or with thin-walled, tapering hairs. The ectal excipulum is composed of cells of textura globulosa-angularis, textura prismatica or textura porrecta and medullary excipulum is composed of cells of textura porrecta. Paraphyses are filiform, sometimes apically swollen, straight to slightly curved and septate. Asci are 4–1000- spored, clavate to subglobose or broadly cylindrical, non-amyloid, opening by rupturing oroperculum and sometimes arising from croziers. Ascospores are ellipsoid, fusoid to filiform, hyaline, aseptate, rarely septate, sometimes guttulate and smooth-walled or ornamented (Doveri 2007, Brummelen & Kristiansen 1998, Cain & Kimbrough 1969, Brummelen 1977, Hoog et al. 2005, Korf & Abawi 1971, Spegazzini 1887). Cleistothecia are subglobose and covered with appendages. The peridium composed of cells of textura globulosa-angularis. The interscal tissue sometimes absent, when present they are filiform paraphyses. Asci are globose, thin-walled, and evanescent or opening by splitting and some ascomata contain only a few asci or sometimes only a single polysporous ascus. Ascospores are globose to ellipsoid or lunate, aseptate, hyaline, brown and smooth-walled or with longitudinal striations (Malloch & Cain 1971, Doveri et al. 2013, Rice & Currah 2006, Sigler et al. 2000, Malloch et al. 2016). Asexual morphs are hyphomycetous, synnematal. Conidiogenesis is phialidic. Conidia are aseptate, hyaline, subglobose to irregularly cylindrical or filiform and smooth (Doveri et al. 2013, Hoog et al. 2005, Korf & Abawi 1971, Crous et al. 2017, Rice & Currah 2006, Malloch et al. 2016, Adhikari et al. 2016).
Notes – In our phylogenetic analysis, Pseudeurotiaceae nested within Thelebolaceae. Jaklitsch et al. (2016) also suggested the genetic similarity between these families.
Recent Genus
RutstroemiaXeropilidium
Ionomidotis
Recent Species
Encoelia furfuraceaRutstroemia tiliacea
Xeropilidium dennisii