The genus was monotypic for a long time, containing only the type species, Leptosillia notha. Until molecular phylogenetic analysis published in 2019 showed that the genus belongs to the order Xylariales, and that the genus Cresporhaphis should be included in Leptosillia. These analyses placed Leptosillia as a sister taxon to family Delonicicolaceae, and so a new family, Leptosilliaceae, was circumscribed to contain it.[4] Both families were then placed in order Delonicicolales, which forms a highly supported clade (100% ML).[5] This was accepted by Wijayawardene et al. 2020.[2]
^ abHöhnel, F von. (1928). "Über Septoria notha Sacc". Mitteilungen aus dem Botanischen Institut der Technischen Hochschule in Wien (in German). 5: 108–112.
^Samarakoon, Milan C. &; Thongbai, Benjarong; Hyde, Kevin D.; Brönstrup, Mark; Beutling, Ulrike; Lambert, Christopher; Miller, Andrew N.; Liu, Jian-Kui (Jack); Promputtha, Itthayakorn; Stadler, Marc (2020). "Elucidation of the life cycle of the endophytic genus Muscodor and its transfer to Induratia in Induratiaceae fam. nov., based on a polyphasic taxonomic approach". Fungal Diversity. 101: 177–210.
^Senanayake, Indunil C.; Jeewon, Rajesh; Hyde, Kevin D.; Bhat, Jayarama D.; Cheewangkoon, Ratchadawan (2020). "Taxonomy and phylogeny of Leptosillia cordylinea sp. nov. from China". Phytotaxa. 435 (3): 213–226. doi:10.11646/phytotaxa.435.3.1. S2CID216225428.