| Name | Accession number | Synonym | Species | Habit | Locality |
|---|---|---|---|---|---|
| CORSAIRE | ERGE-4965; AFRC-9942 | FD-90050[2530]; | TR.AE | W | FRA |
| CORSO | TR.AE | S | DEU | ||
| CORSODOR | K-62813; AUS-23855; ERGE-2080; | S-401,FRA[1347]; | TR.AE | W | FRA |
| CORTAZAR-S-94 | TR-850352-4R-1R-1R-0R[3589]; | TR.AE | S | MEX | |
| CORTEX | TR.AE | ESP | |||
| CORTEZ,NLD | RICP-01C0106330 | LW-86-Z-46-3-5[4136]; | TR.AE | W | NLD |
| CORTEZ,USA | PH-888-103-3[3556]; WPB-8005[3556]; | TR.DR | S | USA:Montana | |
| CORTO | MGH-65.3[128]; | TR.AE | |||
| CORUCHE-DE-BADOJOZ | K-18350 | TR.AE | S | ESP | |
| CORUCHE,TR.AE | GLKU-3206; PI-136570; PI-191081 | TR.AE | W | ESP | |
| CORUCHE,TR.DR | K-20520; K-20521 | TR.DR | S | ESP | |
| CORVETTE | TR.AE | W | GBR | ||
| CORVUS | TR.AE | W | DEU | ||
| CORWA-1 | PI-564850 | GP-434[1570]; CORWA[000]; | TR.AE | W | USA:Colorado |
| CORYDON | CM-81074[706]; CM81074-17Y-01M-0Y-18M-0Y[706]; | TR.AE | S | MEX | |
| COSAGNE | TR.AE | ESP | |||
| COSIMO-RIDOLFI | HYBRIDE-13[39][1446]; | TR.AE | ITA | ||
| COSINUS | TR.SE | W | DEU | ||
| COSIR | K-55892; | GOSER[1252]; | TR.AE | S | DEU |
| COSMODUR | TR.DR | S | FRA |