| Name | Accession number | Synonym | Species | Habit | Locality |
|---|---|---|---|---|---|
| BUCK-55-CL | TR.AE | S | ARG | ||
| BUCK-61-52 | K-51214; PI-213681 | BUCK-61.52[541]; | TR.AE | S | ARG |
| BUCK-75-ANIVERSARIO | TR.AE | S | ARG | ||
| BUCK-AGP-FAST | TR.AE | S | ARG | ||
| BUCK-AGUARA | TR.AE | S | ARG | ||
| BUCK-AMANCAY | TR.AE | S | ARG | ||
| BUCK-AMBER | BUCK-AMBAR[3589]; | TR.DR | S | ARG | |
| BUCK-ANTORCHA | TR.AE | S | ARG | ||
| BUCK-ARAUCANO | K-41766; | ARAUCANO[2331]; | TR.AE | S | ARG |
| BUCK-ARRAYAN | TR.AE | S | ARG | ||
| BUCK-ARRIERO | 15448-4-1-2-1-1[3589]; | TR.AE | S | ARG | |
| BUCK-ATLANTICO | K-45782; PI-213675; PI-352052 | TR.AE | S | ARG:Buenos-Aires | |
| BUCK-AUGEN | TR.AE | W | ARG | ||
| BUCK-AUSTRAL | PI-344454 | TR.AE | S | ARG:Buenos-Aires | |
| BUCK-BAGUAL | SWM-1296-2-2-1-2-3-17-3-0-0ARG[1281]; SWE-1296-2-2-1-2-3-17-3-0-0ARG[1765]; | TR.AE | S | ARG | |
| BUCK-BALCARCE | TR.DR | S | ARG | ||
| BUCK-BAQUEANO | TR.AE | S | ARG | ||
| BUCK-BELLACO | TR.AE | W | ARG | ||
| BUCK-BIGUA | TR.AE | S | ARG | ||
| BUCK-BOLIVAR | PI-585037 | BOLIVAR[946][2331]; | TR.AE | S | ARG |