The genus Xylomyces Goos, R. D. Brooks & Lamore (1977) is based on X. chlamydosporis Goos, R. D. Brooks & Lamore. X. giganteus Goh, is caracterized by setae and hyphopodia absent. Conidiophores and conidia not developed. Chlamydospores narrowly fusiform or long-fusiform, intercalary, straight or curved, solitary or in chains, occasionally branched, with 6±26 septa, constricted at the septa, yellowish brown to mid brown, uniform in colour or end cells paler, thick-walled with scarce irregular longitudinal striations (Goh et al., 1977).

Although the diversity of fungi in aquatic environments has been high, the proportion of these species is still unknown. It is a group that presents great ecological importance and can be used as bioindicators in aquatic ecosystems.

Distribution: in tropical and temperate climate region

There are nine species for the genus Xylomyces so far. The species is related to different substrates within the aquatic environment, there are records of the species in submerged wood in Australia, South Africa and United Kingdom (Goh et al., 1997).

Decaying leaves submerged

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There are no records of the Xylomyces giganteus in Africa, Asia and Oceania. In Brazil, there are no records in the South, Southeast and Midwest.

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