Muscinupta is a fungal 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...

 that produces small white delicate fan-shaped to cupulate fruitbodies on mosses. It is monotypic

Monotypic

In biology, a monotypic taxon is a taxonomic group with only one biological type. The term's usage differs slightly between botany and zoology. The term monotypic has a separate use in conservation biology, monotypic habitat, regarding species habitat conversion eliminating biodiversity and...

, containing the single species Muscinupta laevis. The type species is better known under the name Cyphellostereum laeve but Cyphellostereum

Cyphellostereum

Cyphellostereum is genus of basidiolichens. Species produce white, somewhat cup-shaped fruit bodies on a thin film of green on soil which is the thallus...

is a basidiolichen

Basidiolichen

Basidiolichens are lichenized members of the Basidiomycota, a much smaller group of lichens than the far more common ascolichens in the Ascomycota. In arctic, alpine, and temperate forests, the most common basidiolichens are in the agaric genus Lichenomphalia and the clavarioid genus Multiclavula...

.

Etymology

The name Muscinupta refers to both its moss host and an allution to the marriage of the fungus with the moss together with its veil-like properties on the moss.