Géneros de organismos asociados: Rabdosia [4 taxones], Raciborskiella [115 taxones], Radermachera [1 taxon], Rafnia [23 taxones], Rajania [25 taxones], Ramalia [2 taxones], Ramalina [22 taxones], Ramichloridium [11 taxones], Ramsbottomia [1 taxon], Ramularia [74 taxones], Ramulispora [6 taxones], Rana [1 taxon], Randia [137 taxones], Ranunculus [536 taxones], Rapanea [182 taxones], Raphanus [261 taxones], Raphia [8 taxones], Raphidorrhynchium [9 taxones], Raphiolepis [6 taxones], Rapistrum [35 taxones], Rastococcus [1 taxon], Rastrococcus [2 taxones], Rathbunia [1 taxon], Rattus [31 taxones], Rauvolfia [110 taxones], Ravenala [36 taxones], Ravenelia [15 taxones], Ravenia [2 taxones], Rawenia [1 taxon], Rawsonia [2 taxones], Reaumuria [4 taxones], Rebentischia [4 taxones], Reboulia [1 taxon], Redbia [2 taxones], Refractohilum [3 taxones], Rehmannia [2 taxones], Reichardia [7 taxones], Reinwardtia [2 taxones], Rejoua [2 taxones], Relbunium [3 taxones], Relchela [4 taxones], Relhania [1 taxon], Remirea [1 taxon], Renealmia [13 taxones], Reseda [31 taxones], Restio [2 taxones], Resupinatus [2 taxones], Retama [5 taxones], Reynosia [4 taxones], Reynoutria [5 taxones], Rhabditis [8 taxones], Rhabdospora [18 taxones], Rhacoma [22 taxones], Rhaeoma [1 taxon], Rhagadiolus [2 taxones], Rhagadolobium [1 taxon], Rhagadostoma [6 taxones], Rhamnella [2 taxones], Rhamnus [459 taxones], Rhamphoria [1 taxon], Rhaphiolepis [2 taxones], Rhaphiostylis [2 taxones], Rhaphithamnus [6 taxones], Rhapis [22 taxones], Rhaponticum [5 taxones], Rheedia [9 taxones], Rheum [46 taxones], Rhexia [1 taxon], Rhigiocarya [2 taxones], Rhinacanthus [4 taxones], Rhinanthus [28 taxones], Rhinoceros [3 taxones], Rhinocladiella [31 taxones], Rhinocladium [4 taxones], Rhinotrichum [3 taxones], Rhipsalis [2 taxones], Rhizidiomyces [8 taxones], Rhizocarpon [18 taxones], Rhizoctonia [1 taxon], Rhizomorpha [1 taxon], Rhizophlyctis [6 taxones], Rhizophora [138 taxones], Rhizophydium [12 taxones], Rhizopogon [5 taxones], Rhizopus [17 taxones], Rhizosphaera [4 taxones], Rhizosphaerina [1 taxon], Rhodamnia [1 taxon], Rhodiola [1 taxon], Rhodoarrhenia [1 taxon], Rhodobryum [2 taxones], Rhododendron [564 taxones], Rhodomyrtus [3 taxones], Rhodopis [1 taxon], Rhodostachis [5 taxones], Rhodosticta [9 taxones], Rhodotorula [13 taxones], Rhodotypos [3 taxones], Rhodura [1 taxon], Rhoeo [5 taxones], Rhoiacarpos [15 taxones], Rhoicissus [47 taxones], Rhoiocarpus [38 taxones], Rhombostilbella [6 taxones], Rhopalomyces [1 taxon], Rhopalosiphum [2 taxones], Rhopalostylis [3 taxones], Rhopographus [2 taxones], Rhus [391 taxones], Rhymbocarpus [2 taxones], Rhynchaenus [1 taxon], Rhynchelytrum [78 taxones], Rhynchocoris [2 taxones], Rhynchomeliola [14 taxones], Rhynchonectria [1 taxon], Rhynchosia [228 taxones], Rhynchospora [234 taxones], Rhytidenglerula [5 taxones], Rhytidhysterium [9 taxones], Rhytidhysteron [31 taxones], Rhytidophyllum [2 taxones], Rhytisma [29 taxones], Ribes [774 taxones], Riccardia [1 taxon], Riccia [20 taxones], Richardia [5 taxones], Richea [10 taxones], Richeria [1 taxon], Ricinodendron [1 taxon], Ricinus [313 taxones], Rigidoporus [15 taxones], Rimbachia [2 taxones], Rimularia [2 taxones], Rindera [3 taxones], Rinodina [4 taxones], Rinorea [21 taxones], Ripogonum [2 taxones], Rivea [15 taxones], Rivina [25 taxones], Rivinia [2 taxones], Rizalia [2 taxones], Rizaliopsis [10 taxones], Robillarda [8 taxones], Robinia [914 taxones], Robinsonia [5 taxones], Robledia [1 taxon], Roccella [1 taxon], Rochelia [1 taxon], Roegneria [7 taxones], Roemeria [1 taxon], Rogellia [7 taxones], Rohdea [2 taxones], Rollandia [4 taxones], Rollinia [14 taxones], Romellia [1 taxon], Romulea [5 taxones], Rondeletia [117 taxones], Rorippa [29 taxones], Rosa [2020 taxones], Roscoea [3 taxones], Rosellinia [12 taxones], Roselliniella [5 taxones], Rosenscheldiella [8 taxones], Roseodiscus [1 taxon], Rosmarinus [9 taxones], Rostellularia [1 taxon], Rostkovia [11 taxones], Rotala [3 taxones], Rothmannia [6 taxones], Rottboellia [185 taxones], Roupala [58 taxones], Roupellia [1 taxon], Rourea [52 taxones], Rousselia [4 taxones], Royena [30 taxones], Roystonea [1171 taxones], Rozella [9 taxones], Rozellopsis [1 taxon], Rubacer [4 taxones], Rubia [51 taxones], Rubus [1627 taxones], Rudbeckia [38 taxones], Rudgea [2 taxones], Rudolphia [9 taxones], Ruellia [40 taxones], Rumex [719 taxones], Rumohra [22 taxones], Rungia [8 taxones], Ruprechtia [1 taxon], Rusa [9 taxones], Ruscus [103 taxones], Russelia [3 taxones], Russula [28 taxones], Ruta [6 taxones], Ruthea [1 taxon], Ruthia [4 taxones], Rutidea [4 taxones], Rutola [1 taxon], Ruttya [2 taxones], Ryania [2 taxones], Ryparobius [8 taxones], Rytilix [5 taxones]