The term Flammulina fennae is not widely recognized in current scientific or mycological literature. It does not appear in major taxonomic databases such as Index Fungorum, MycoBank, or the NCBI Taxonomy database as an accepted species name within the genus Flammulina.
Flammulina is a genus of fungi in the family Physalacriaceae, best known for the commercially cultivated species Flammulina velutipes, commonly referred to as enoki or enokitake.
The suffix "fennae" may suggest a taxonomic eponym, possibly honoring a person named Fenn, as is common in botanical and mycological nomenclature. However, no verifiable record of a formal description or peer-reviewed publication establishing Flammulina fennae as a valid species has been identified.
Accurate information is not confirmed. The term may represent a misspelling, an unpublished name, or a nomen nudum (an invalidly published name).