RT Journal Article T1 Top 50 most wanted fungi JF MycoKeys JO MC FD Pensoft Publishers DO 10.3897/mycokeys.12.7553 VO 12 A1 Nilsson, R. Henrik A1 Wurzbacher, Christian A1 Bahram, Mohammad A1 R. M. Coimbra, Victor A1 Larsson, Ellen A1 Tedersoo, Leho A1 Eriksson, Jonna A1 Duarte, Camila A1 Svantesson, Sten A1 Sánchez-García, Marisol A1 Ryberg, Martin K. A1 Kristiansson, Erik A1 Abarenkov, Kessy YR 2016 UL https://doi.org/10.3897/mycokeys.12.7553 AB Environmental sequencing regularly recovers fungi that cannot be classified to any meaningful taxonomic level beyond “Fungi”. There are several examples where evidence of such lineages has been sitting in public sequence databases for up to ten years before receiving scientific attention and formal recognition. In order to highlight these unidentified lineages for taxonomic scrutiny, a search function is presented that produces updated lists of approximately genus-level clusters of fungal ITS sequences that remain unidentified at the phylum, class, and order levels, respectively. The search function (https://unite.ut.ee/top50.php) is implemented in the UNITE database for molecular identification of fungi, such that the underlying sequences and fungal lineages are open to third-party annotation. We invite researchers to examine these enigmatic fungal lineages in the hope that their taxonomic resolution will not have to wait another ten years or more.