Radiigera, Radulodon, Radulomyces, Ramaria, Ramaricium, Ramariopsis, Rebentischia, Repetobasidiellum, Repetobasidium, Resinicium, Resupinatus, Retinocyclus, Rhabdocline, Rhagadostoma, Rhamphoria, Rhizina, Rhizodiscina, Rhizopogon, Rhodocybe, Rhodotus, Rhopographus, Rhytisma, Richoniella, Rickenella, Rigidoporus, Rimbachia, Ripartites, Robergea, Rossellinia, Rozites, Rugosomyces, Russula, Rustroemia