Hypholoma cinnabarinum revisited: A contribution to knowledge of Agaricus subgenus Lanagaricus section Trisulphurati (Agaricaceae, Agaricales)

• Hypholoma cinnabarinum was revisited based on morphological and molecular data.
• Comprehensive descriptions, color photos and line drawings are given for the taxon.
• Hypholoma cinnabarinum is a member of Agaricus section Trisulphurati.

Hypholoma cinnabarinum (Strophariaceae, Agaricales), a species described from eastern China, was revisited based on new collections from the south of China, from which comprehensive descriptions, color photos and line drawings were obtained. In addition to morphological data, a phylogenetic analysis based on the nuclear ribosomal internal transcribed spacer region was also carried out, leading to the conclusion that H. cinnabarinum is a member of Agaricus subgenus Lanagaricus section Trisulphurati (Agaricaceae, Agaricales).