Microscopic characters of Riopa. Riopa metamorphosa, epitype: a subicular hyphae b tube trama and hymenium c anamorph (Sporotrichum aurantiacum) d basidioles and basidia showing the characteristic corymb branching e hymenial cystidia. Spores of f Riopa metamorphosa drawn from the holotype of R. davidii g epitype of R. metamorphosa h holotype of R. pudens.

 
 
  Part of: Miettinen O, Spirin V, Vlas├ík J, Rivoire B, Stenroos S, Hibbett D (2016) Polypores and genus concepts in Phanerochaetaceae (Polyporales, Basidiomycota). MycoKeys 17: 1-46. https://doi.org/10.3897/mycokeys.17.10153