Phylogenetic and morphological analyses onRigidoporuswere carried out. The genusRigidoporus(Hymenochaetales,Basidiomycota), typified byR. microporus(Fr.) Overeem. (synonymPolyporus micromegasMont.), was established by Murrill in 1905. The genus is mainly characterized by annual to perennial, resupinate, effused-reflexed to pileate or stipitate basidiomata with azonate or concentrically zonate and sulcate upper surface, a monomitic to pseudo-dimitic hyphal structure, simple-septate generative hyphae, and ellipsoid to globose basidiospores. Phylogeny on species of the genus is reconstructed with two loci DNA sequences including the internal transcribed spacer regions and the large subunit. Three new species inRigidoporusare described and illustrated from Asia, and one new combination in the genus is proposed. The main morphological characteristics of the currently accepted species ofRigidoporusare provided.