Keinstirschia is a genus of fungi in the order Diaporthales, class Sordariomycetes. The relationship of this taxon to other taxa within the order is unknown (incertae sedis). A monotypic genus, Keinstirschia contains the single species Keinstirschia megalosperma, originally described as Cryptosporella megalosperma by German mycologist Wilhelm Kirschstein in 1939.
Species taxanomy provided by GBIF Secretariat (2022). GBIF Backbone Taxonomy. Checklist dataset https://doi.org/10.15468/39omei accessed via GBIF.org on 2023-06-13; License: CC BY 4.0