Dothideomycetes » Dothideomycetes, genera incertae sedis

Gilletiella

Citation: Pem D et al. (2019) Mycosphere Notes 275-324: A morphotaxonomic revision and typification of obscure Dothideomycetes genera (incertae sedis). Mycosphere 10(1), 1115–1246

 

Gilletiella Sacc. & P. Syd., Syll. fung. (Abellini) 14(2): 691 (1899)

Foliicolous in undergrowth of Chusquea serrulata. Thallus crustose, thick, ecorticate. Sexual morph: Ascomata small, solitary or scattered, concentrically arranged, covered by the algal layer, lenticular to conical, rounded or outwardly elongate, dark brown to black, top rounded, with dark brown, conical involucrellum below the algal layer and dark brown, membranous involucrum (peridium) surrounding the subglobose nucleus, without apparent ostiole. Peridium thin, single layered composed of brown, septate hyphae relatively conglutinated into textura epidermoidea to intricata. Hamathecium gelatinous. Pseudoparaphyses lacking. Asci 8-spored, bitunicate, fissitunicate, obclavate, without a distinct ocular chamber. Ascospores 2–3-seriate irregularly arranged in asci, fusiform, pale grayish, 1-septate to submuriform, smooth-walled, ends rounded, without endospore, without perispore. Asexual morph: Undertermined.

 

Type species – Gilletiella chusqueae (Pat.) Sacc. & P. Syd.

 

Notes – The monotypic genus Gilletiella was introduced by Patouillard & Lagerheim (1899) based on the type species G. chusqueae, which was found on matrix of Chusquea serrulata from Ecuador. Saccardo & Sydow (1899) redescribed the genus. The genus is characterized by a hypostromatic perithecia, 8-spored bitunicate asci, 3-septate pale grayish ascospores. The asexual morph of the genus is coelomycetous (ascochyta-like). Gilletiella was compared to Micropeltis in having similar stromata and Polystomella with respect to the ascospores (Patouillard & Lagerheim 1899). The species lack sequence data. We therefore, retain the genus in Dothideomycetes, genera incertae sedis.

 

References

Patouillard NT. 1889 – Le genre Ganoderma. Bulletin de la Société Mycologique de France 5, 64–80.

Saccardo PA. 1889 – Discomyceteae et Phymatosphaeriaceae. Sylloge Fungorum. 8, 1–1143.

 

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