The species is a plant pathogen, parasitic on sedges, and produces auricularioid (laterally septate) basidia and basidiospores that germinate to form a yeast state.

[1] Rabenhorst had proposed the name Kriegeria previously for an ascomycetous fungus, leading to the creation of the replacement genus Xenogloea for Bresadola's species.

Molecular research, based on cladistic analysis of DNA sequences, has shown that Kriegeria is a monophyletic (natural) genus.

[4][5] The fungus grows within the host leaves, producing hyphae with clamp connections.

[6][3] In Europe, Kriegeria eriophori has been recorded from Germany and the Czech Republic; in North America, from Canada and the USA.