| Name | Accession number | Synonym | Species | Habit | Locality |
|---|---|---|---|---|---|
| REWCAS | FR-728[2331]; | TR.AE | S | COL | |
| REX,FRA | K-52813,45644; PI-285088,316005; AFRC-1350 | REX-VILMORIN[40]; | TR.AE | S | FRA |
| REXIA | REGIA[1228][1580][1830]; SO-7953[1228]; | TR.AE | W | SVK | |
| REX-M-1 | CI-11689 | REX-SELECTION[2965]; 10065-M-1[2965]; | TR.AE | W | USA:Oregon |
| REX-M-2 | CI-11690 | REX-SELECTION[2965]; 10065-M-2[2965]; | TR.AE | W | USA:Washington |
| REXOL | PBIS-03-1084[4136]; | TR.AE | W | FRA | |
| REX,TR.SE | TR.SE | W | ZAF | ||
| REX,USA | K-45309; CI-10065; KU-322; AUS-3277 | TR.AE | W | USA:Oregon | |
| REYATI | PI-51211; CI-6652; AUS-10130; | TR.DR | S | LBN | |
| REYDON | TR.AE | W | GBR | ||
| REYIMUXIA | TR.AE | W | CHN:Xinjiang-Uygur | ||
| REYNA-28 | ICW-00-0634-6AP-0AP-0AP-7AP-0AP-0DZ-0AP-0DZ-0KUL-0SIN-0AP-0NJ-0AP-0ALK-0AP[4361]; | TR.AE | S | NGA | |
| REYNOLDS-DISCOVORY | TR.TG | AUS | |||
| REZA-KHANI | K-22496; K-38683 | REZAKHANI[541]; | TR.AE | S | IRN |
| RF-1 | TR.AE | I | CHN | ||
| RF-20 | TR.AE | S | MEX | ||
| RF-413-9 | AUS-8499 | TR.AE | MEX | ||
| RF-MIRONOVSKAYA-808 | TR.AE | W | USA | ||
| RF-MIRONOVSKAYA-808-PROFESSEUR-MARCHAL | TR.AE | W | HUN | ||
| RF-MS-MIRONOVSKAYA-808-RF-MIRONOVSKAYA-808 | TR.AE | W | HUN |