''Ruzenia'' is a genus of fungi in the

Helminthosphaeriaceae The Helminthosphaeriaceae are a family of fungi in the class Sordariomycetes. Species in this family are saprobic, often growing on rotten wood or on the fruit bodies of old mushrooms. They are distributed in temperate In geography, t ...

family of the

Ascomycota Ascomycota is a phylum of the kingdom Fungi that, together with the Basidiomycota, forms the subkingdom Dikarya. Its members are commonly known as the sac fungi or ascomycetes. It is the largest phylum of Fungi, with over 64,000 species. The def ...

. The relationship of this taxon to other taxa within the

Sordariomycetes Sordariomycetes is a class of fungi in the subdivision Pezizomycotina (Ascomycota), consisting of 28 orders, 90 families, 1344 genera. Sordariomycetes is from the Latin sordes (filth) because some species grow in animal feces, though growth habit ...

class Class or The Class may refer to: Common uses not otherwise categorized * Class (biology), a taxonomic rank * Class (knowledge representation), a collection of individuals or objects * Class (philosophy), an analytical concept used differentl ...

is unknown ('' incertae sedis''), and it has not yet been placed with certainty into any

order Order, ORDER or Orders may refer to: * Categorization, the process in which ideas and objects are recognized, differentiated, and understood * Heterarchy, a system of organization wherein the elements have the potential to be ranked a number of d ...

. This is a monotypic genus, containing the single species ''Ruzenia spermoides''.

References

Sordariomycetes enigmatic taxa Monotypic Sordariomycetes genera {{Sordariomycetes-stub