A novel species, Leucocoprinus aurantiopileus , is described from Margalla Hills National Park, Islamabad, Pakistan, using an integrated approach. Phylogenetic analyses based on combined internal transcribed spacer and large subunit sequences confirm its placement within Leucocoprinus . L. aurantiopileus is distinguished by a conical to campanulate, subumbonate to umbonate pileus, dark red center, and light orange margins, alo...