Phylogenetic classification of arbuscular mycorrhizal fungi: new species and higher-ranking taxa in Glomeromycota and Mucoromycota (class Endogonomycetes) Author Tedersoo, Leho Mycology and Microbiology Center, University of Tartu, 2 Liivi, 50409 Tartu, Estonia & Department of Zoology, College of Science, King Saud University, 12371 Riyadh, Saudi Arabia Author Magurno, Franco 0000-0002-3117-8149 Institute of Biology, Biotechnology and Environmental Protection, Faculty of Natural Sciences, University of Silesia in Katowice, Jagiellońska 28, 40 - 032 Katowice, Poland Author Alkahtani, Saad 0000-0001-7381-5110 Department of Zoology, College of Science, King Saud University, 12371 Riyadh, Saudi Arabia Author Mikryukov, Vladimir 0000-0003-2786-2690 Mycology and Microbiology Center, University of Tartu, 2 Liivi, 50409 Tartu, Estonia text MycoKeys 2024 2024-08-09 107 249 271 journal article 10.3897/mycokeys.107.125549 Unemaeeaceae Tedersoo fam. nov. Type genus. Unemaeea Tedersoo. Description. Covers the monophyletic group in Unemaeeales (Fig. 2 ). Phylogenetically delimited as the least inclusive clade covering sequence accessions EUK 1630871 and EUK 1635889 (Suppl. material 3 ). Notes. Recognised based on eDNA sequences only. Currently includes Unemaeea and multiple poorly alignable ITS sequences with no LSU , for example EUK 1217297 (FunAqua sample W 0006 s, lake sediment in Petrolandia, Brazil , - 8.9908 ° N , - 38.2251 ° E ) and FJ 528738 ( Araucaria spp. plantation soil, Gadgarra, Australia , - 17.1641 ° N , 145.6469 ° E ) that was isolated by Nathalie J . A . Curlevski ( Curlevski et al. 2010 ). It seems that several Unemaeeaceae spp. have preferential habitat in anoxic soils and sediments.