| Abbrev | Name | Spec | Type | Locality |
|---|---|---|---|---|
| RD119 | ROSNER-DURUM-119[1281]; | TR.DR | CAN | |
| RDC | RECIO-DE-CORDOBA[1281]; | TR.DR | ESP | |
| RE | RED-EGYPTIAN[1112][1281]; | TR.AE | ZAF | |
| REHE | REDHEAD[115][3692]; | TR.DR | S | MEX |
| REN | REDNECK[115][3692]; | TR.DR | S | MEX |
| RFN | RULOFEN[145][144][1281]; | TR.AE | S | CHL |
| RLL,1 | RALLE[1281]; | TR.AE | S | DEU |
| RIP | RIPARIA[115][3692]; | TR.DR | S | MEX |
| RK1 | KANSAS-RESTORER[39] | USA | ||
| RL,1 | RUST-LABORATORY | |||
| RL,2 | RELIANCE[1281]; | TR.AE | USA | |
| RL3442 | RL-3442[1281]; | TR.AE | CAN | |
| RLD | REDLAND[740][1281]; | TR.AE | W | USA |
| RLKL | RELIANCE-SEL.KLEIN[145] | TR.AE | S | ARG |
| RLL,2 | RALLE,MEX[115]; | TR.DR | S | MEX |
| RLT | ROLETTE[219][1281]; | TR.DR | S | USA:ND |
| RM,1 | RED-MACE[1281]; | TR.AE | ||
| RMAG | RAFAELA-MAG[145][1281]; | TR.AE | S | ARG |
| RN | RIO-NEGRO[145][1112][1281]; | TR.AE | S | BRA |
| RN1 | NEBRASKA-RESTORER-1[39]; | USA |