Baeospora is a genus

Genus

In biology, a genus is a low-level taxonomic rank used in the biological classification of living and fossil organisms, which is an example of definition by genus and differentia...

 of mushroom

Mushroom

A mushroom is the fleshy, spore-bearing fruiting body of a fungus, typically produced above ground on soil or on its food source. The standard for the name "mushroom" is the cultivated white button mushroom, Agaricus bisporus; hence the word "mushroom" is most often applied to those fungi that...

-producing fungi. It is variously classified in the families Tricholomataceae

Tricholomataceae

The Tricholomataceae are a large family of mushrooms within the Agaricales. A classic "wastebasket taxon", the Tricholomataceae is inclusive of any white-, yellow-, or pink-spored genera in the Agaricales not already classified as belonging to the Amanitaceae, Lepiotaceae, Hygrophoraceae,...

 or Marasmiaceae

Marasmiaceae

The Marasmiaceae are a family of basidiomycete fungi which have white spores. They mostly have a tough stem and the capability of shrivelling up during a dry period and later recovering. The widely consumed edible fungus Lentinula edodes, the Shiitake mushroom, is a member of this family...

, though as of 2007, these groups are undergoing revision. It has been found to fall into the "hydropoid clade" (Hydropus

Hydropus

Hydropus is a genus of fungus in the Marasmiaceae family. The widespread genus contains about 100 species, especially in tropical areas.-Species:*Hydropus atramentosus*Hydropus conicus*Hydropus floccipes*Hydropus funebris...

and allies), though no formal Linnean taxon has been designated based on this classification. The genus was circumscribed by mycologist Rolf Singer

Rolf Singer

Rolf Singer was a German-born mycologist and one of the most important taxonomists of gilled mushrooms in the 20th century....

in 1938.