Gymnopilus maritimus was first described by mycologists Laura Guzmán-Dávalos (a specialist in Gymnopilus[REF]), Antonio Ortega, Marco Contu and Alfredo Vizzini in 2009 in an article in the journal Mycological Progress [REF].
Within the genus Gymnopilus, it is located in the subgenus Gymnopilus and section Macrospori [REF].