| Abbrev | Name | Spec | Type | Locality |
|---|---|---|---|---|
| REDA | RED-ALLEN[3733] | TR.AE | S | USA:WA |
| RH | REDHART[3733] | TR.AE | W | USA:SC |
| RDD | REDLAND[3733] | TR.AE | W | USA:NE |
| RENF | RENFREW[3733] | TR.AE | S | CAN |
| RNN,2 | RENOWN[3733] | TR.AE | S | CAN |
| RVL,2 | RENVILLE[3733] | TR.AE | S | USA:ND |
| RTI | RIETI[3733] | TR.AE | S | PRT |
| RIBO | RIO-BLANCO[3733] | TR.AE | W | USA |
| RIV | RIVERINA[3733] | TR.AE | W | AUS |
| ROB | ROBLIN[3733] | TR.AE | S | CAN |
| RKY | ROCKY[3733] | TR.AE | W | USA |
| ROG73 | ROGUE-73[3733] | TR.AE | S | MEX |
| RJM | ROJAL-DE-MURCIA[3733] | TR.DR | S | ESP |
| ROL,2 | ROLAND[3733] | TR.AE | W | USA:IL |
| RNS | RONOS[3733] | TR.AE | W | DEU |
| RON,2 | ROSEN[3733] | TR.AE | W | USA:ARK |
| RDR,2 | ROUGHRIDER[3733] | TR.AE | W | USA:ND |
| RSA | RUSALKA[3733] | TR.AE | W | BGR |
| ROWD | ROWDY[3733] | TR.AE | W | USA |
| R220 | RS-220[3733] | TR.AE | W |