Xenospadicoidales » Rhamphoriaceae

Xylolentia

Xylolentia Réblová, in Réblová & Štěpánek, Mycologia: 10.1080/00275514.2018.1475164, 10 (2018)

Diaporthomycetidae incertae sedis, Rhamphoriaceae, Xylolentia

Index Fungorum number: IF 823921; Facesoffungi number: FoF 10303; 2 morphological species; 2 species with sequence data.

 

Saprobic on decaying wood. Sexual morph: Ascomata solitary or aggregated, perithecial, non-stromatic, immersed or partially erumpent becoming superficial, venter globose, collapsing laterally, glabrous, black, with a cylindrical neck, ostiolate. Ostioles periphysate. Ascomatal wall two-layered. Paraphyses persistent, cylindrical, septate. Asci cylindrical-clavate, unitunicate, long-stipitate, 8-spored, apex with a distinct, J-, apical annulus. Ascospores septate, ellipsoidal to obovoid, brown prior to discharge, smooth-walled, without sheath or appendages.  Asexual morph: Conidiophores septate, macronematous, mononematous, unbranched. Conidiogenous cells terminal, integrated, polyblastic, with sympodially extending rachis. Conidia hyaline to brown, aseptate (adapted from Réblová & Štěpánek 2018).

 

Typespecies:Xylolentia brunneola Réblová, in Réblová & Štěpánek, Mycologia: 10.1080/00275514.2018.1475164, 10 (2018)

 

Notes: Xylolentia brunneola was collected on decaying wood of Fagus sylvatica. This genus is distinct among members of the Rhamphoriaceae in having brown, septate ascospores. It is similar to Brunneosporella aquatica (Ranghoo et al. 2001), Hyalorostratum brunneisporum (Raja et al. 2010), and Jobellisia spp. (Huhndorf et al. 1999), all of which have 1-septate, brown ascospores arranged uniseriately in the ascus. However, analysis of a combined SSU, LSU and rpb2 sequence dataset did not show a close relationship of Xylolentia with these genera (Réblová & Štěpánek 2018) (notes copied from Hyde et al. 2020).

 

Species illustrated in this entry

Xylolentia reniformis C.G. Lin, K.D. Hyde & J.K. Liu

 

 

References:

Huhndorf SM, Fernandez FA, Lodge DJ. 1999 – Neotropical ascomycetes 9. Jobellisia species from Puerto Rico and elsewhere. Sydowia 51, 183–196

Hyde KD, Norphanphoun C, Maharachchikumbura SSN, Bhat DJ et al. 2020 – Refined families of Sordariomycetes. Mycosphere 11, 305–1059

Raja HA, Miller AN, Shearer CA. 2010 – Freshwater Ascomycetes: Hyalorostratum brunneisporum, a new genus and species in the Diaporthales (Sordariomycetidae, Sordariomycetes) from North America. Mycosphere 1, 275–288

Ranghoo VM, Tsui CKM, Hyde KD. 2001 – Brunneosporella aquatica gen. et sp. nov., Aqualignicola hyalina gen. et sp. nov., Jobellisia viridifusca sp. nov. and Porosphaerellopsis bipolaris sp. nov. (ascomycetes) from submerged wood in freshwater habitats. Mycological Research 105, 625–633

Réblová, M. & Štěpánek, V. (2018). Introducing the Rhamphoriaceae, fam. nov.(Sordariomycetes), two new genera, and new life histories for taxa with Phaeoisaria-and Idriella-like anamorphs. Mycologia, 110(4): 750-770

 

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