Four new species of subgenus (Entolomataceae, Agaricales) from subtropical regions of China.

In this study, four species of EntolomasubgenusCyanula (, , , and ) from subtropical regions of China, are described as new to science based on morphological and phylogenetic analyses. Morphologically, is characterized by the white basidiomata, relatively large basidiospores, and carneogriseum-type lamellae edge; is recognized by the fuscous pileus, crowded and adnate lamellae, and medium-sized basidiospores; is identified by the yellow pileus and intervenose lamellae with sterile or heterogeneous edge; is distinct by the blue basidiomata and fertile lamellae edge with slightly bluish pigmentation near the stipe. belongs to sect. Caesiocincta, subsect. Queletia, and belongs to sect. Poliopodes. The remaining two species each form independent branches and do not belong to any known sections. Detailed descriptions, color photos, and a key to related species are presented.