Xenodevriesia strelitziicola is a pathogenic ascomycete fungus in the class Dothideomycetes that infects the South African plant Strelitzia. It is the only species of the monotypic genus Xenodevriesia and family Xenodevriesiaceae.
Xenodevriesia mycelium consists of medium brown, smooth, septate, branched hyphae. The conidiophores are dimorphic: there are microconidiophores and macroconidiophores.
The conidia themselves are smooth, guttulate (i.e. spores containing one or more oil-like globules), between subcylindrical and narrowly obclavate in shape, with an apex obtuse or truncate and a truncate base; they occur in branched chains that are widest at the basal septum. The hila are inconspicuous or somewhat darkened and thickened, and aren't refractive.
There has been no observation of chlamydospores.
In particular, X. strelitziicola presents hyphae measuring 2âÂÂ3 üm in width; microconidiophores measuring 4âÂÂ7 x 2âÂÂ3 üm; conidiogenous cells measuring 7âÂÂ15 x 2.5âÂÂ3 üm; macroconidiophores measuring 30âÂÂ100 x 2.5âÂÂ3 üm; and conidia with hila that are 1-1.5 üm wide.
First described in 2009, the species was placed in the genus Devriesia, located in the family Teratosphaeriaceae, under the name Devriesia strelitziicola, in which the epithet is a reference to the host Strelitzia.
In 2019 it was moved to its own genus Xenodevriesia and its own family Xenodevriesiaceae, after a phylogenetic analysis of the entire Dothideomycetes class showed its independence from the genus Devriesia.