Radulomyces paumanokensis 
Ragged Polypore 
Ramalina sinensis 
Ramaria australiana 
Ramaria capitata 
Ramaria cyaneigranosa 
Ramaria filicicola 
Ramaria flaccida 
Ramaria lorithamnus 
Ramaria rasilispora 
Ramaria rubella 
Ramaria rubricarnata 
Ramaria rubripermanens 
Ramaria stuntzii 
Ramaria subbotrytis 
Ramaricium polyporoideum 
Ramariopsis pulchella 
Ravenels stinkhorn 
Red Banded Polypore 
Red blotch 
Red Bog Bolete 
Red Brain Fungus 
Red Chanterelle 
Red Coral