Scientists have sequenced the complete genetic blueprint of a wood-rotting mushroom called Tyromyces fissilis for the first time. This fungus is medicinally important and has the ability to break down wood and produce therapeutic compounds. By analyzing its mitochondrial genome and comparing it with related fungi, researchers found that it is most closely related to another fungus called Phlebia radiata and belongs to a previously understudied fungal family. This genetic information will help scientists better understand how these fungi are related and may lead to new medical applications.