Ascomycota, genera » Ascomycota, incertae sedis


Yalomyces Nag Raj, Coelomycetous Anamorphs with Appendage-bearing Conidia: 988 (1993)


Ascomycota, genera incertae sedis


Saprobic on the host plant in terrestrial habitat. Sexual morph: undetermined. Asexual morph: Conidiomata pycnidial, hypophyllous, solitary, deeply immersed in the host mesophyll with only the ostiole visible in surface view, globose to subglobose, unilocular, glabrous, thick-walled, ostiolate. Ostiole single, circular, centrally located, with subcylindrical, branched or unbranched, septate periphyses. Conidiomatal wall composed of thick-walled, brown to hyaline cells of textura angularis to textura globulosa or textura globulosa. Conidiophores reduced to conidiogenous cells. Conidiogenous cells arising from the inner wall layer of conidiomata, hyaline, enteroblastic, cylindrical, smooth-walled. Conidia hyaline, elongate-ellipsoid or broadly ellipsoid or obovoid, muriform, smooth-walled, enclosed in a distinct mucoid envelope, bearing tentaculiform or irregular mucoid appendages at each end.


Type species: Yalomyces pulcher Nag Raj, Coelomycetous Anamorphs with Appendage-bearing Conidia: 988 (1993)


Notes: Nag Raj (1993) introduced Yalomyces to accommodate a single species Y. pulcher, associated with leaf spots on Litsea sp. The muriform conidia of Yalomyces are similar to Camarosporidiella, Camarosporium, Neocamarosporium, and Staurosphaeria (Sutton 1980, Wanasinghe et al. 2017). However, Yalomyces has hyaline, elongate-ellipsoid or obovoid, muriform conidia bearing bipolar, mucoid appendages, while the other genera have brown to dark brown conidia lacking mucoid appendages. There is no molecular data available for Yalomyces. Fresh collections of type are needed to place it in a nature classification.


Distribution: India.




Li WJ, McKenZie EHC, Liu JK, Bhat DJ, Dai DQ, Caporesi E, Tian Q, Maharachcikumbura SSN, Luo ZL, Shang QJ, Zhang JF, Tangthirasunun N, Karunarathna SC, Xu JC, Hyde KD (2020) Taxonomy and phylogeny of hyaline-spored coelomycetes. Fungal Diversity 100: pages279–801.





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