The researchers analysed hundreds of genes to determine where the newly discovered fungus Semicentenialea rex belongs in the fungal tree of life. The results show that S. rex, previously known as GS25, forms a distinct lineage within the Pucciniomycotina. To confirm its placement, genes from both closely related and more distantly related fungi were compared, including species from both the Basidiomycota and the Ascomycota. Credit to Anna Rosling.