| Name | Accession number | Synonym | Species | Habit | Locality |
|---|---|---|---|---|---|
| OTOFTE-56 | K-43222; PI-197754; AFRC-452; AUS-17435 | OETOFTE-56[2331]; | TR.AE | W | DNK |
| OTOFTE-71 | OETOFTE-71[2331]; | TR.AE | W | DNK | |
| OTOFTEGARD-32 | K-45684 | TR.AE | W | DNK | |
| OTRADA,KRASNODAR | K-63048 | LUTESCENS-1137-h-77[413]; KNIISKH-1132[413]; | TR.AE | W | RUS:Krasnodar |
| OTRADA-SEVERA | M-97-V[1184]; | TR.AE | W | RUS:Novosibirsk | |
| OTRADA-SIBIRI | K-62943 | LUTESCENS-68-93[1371]; | TR.AE | S | RUS:Omsk |
| OTRADA,UKR | K-50885; | TR.AE | S | UKR:Odessa | |
| OTSEGO | OH-751[3733][3892]; | TR.AE | W | USA:Ohio | |
| OTSO | HJA-21614[3718]; | TR.AE | W | FIN | |
| OTTAVA | TR.DR | S | ITA | ||
| OTTAWA | K-44890; CI-12804; | KS-49454[1022][1112]; | TR.AE | W | USA:Kansas |
| OTTAWA-2619-A | K-40051; | TR.AE | W | CAN | |
| OTTAWA-58 | TR.AE | CAN | |||
| OTTAWA-7237-1959 | CI-12804; | TR.AE | W | USA:Kansas | |
| OTTAWA-945-1958 | CI-12804; | TR.AE | W | USA:Kansas | |
| OTTENBACHER | K-23380; K-26186; BVAL-3036 | OTTERBACHER[541]; OTTERSBACHER[541]; | TR.AE | W | AUT |
| OTTENBACHER-BART-VARIATION | BVAL-3025; | TR.AE | AUT | ||
| OTTENBACHER-ROTER-BART | TR.AE | W | AUT | ||
| OTTENBACHER-VARIATION | BVAL-3019; | TR.AE | AUT | ||
| OTTENKUL | TR.AE | W | EST |