Armillaria luteobubalina was first described in 1978 by mycologists Roy Watling and Glen Kile, who studied its effects on a fast-growing plantation of Eucalyptus regnans near Traralgon, Victoria.
A phylogenetic study of South American Armillaria species concluded that A. luteobubalina is in a lineage that includes A. montagnei, and these are sister to a lineage containing A. paulensis,[REF] a species known from a single specimen collected in São Paulo, Brazil [REF].