| Name | Accession number | Synonym | Species | Habit | Locality |
|---|---|---|---|---|---|
| BUTEO,MEX | CM-31070[114][144]; | TR.AE | S | MEX | |
| BUTIN,CSK | K-56767 | BU-17[667][1592]; | TR.AE | W | SVK |
| BUTIN,ITA | TR.AE | W | ITA | ||
| BUTLER | K-43071; CI-12527; | TN-1151[1111]; | TR.AE | W | USA:Ohio |
| BUTORIDES | CD-84833[1281][3692]; | TR.DR | S | MEX | |
| BUTOVO | K-55396 | TR.AE | W | HUN | |
| BUTOVO-68 | K-39437 | TR.AE | W | BGR | |
| BUTTAH | CD-79139[1281][3692]; | TR.DR | S | MEX | |
| BUTTE | CI-17681; AFRC-8331; AUS-20388 | ND-519[1318][3227]; NORTH-DAKOTA-519[2331]; BN-22[1323]; | TR.AE | S | USA:North-Dakota |
| BUTTE-86 | K-61182; K-62516; CN-113467 | ND-597[3227]; NORTH-DAKOTA-597[000]; | TR.AE | S | USA:North-Dakota |
| BUTTON | BUTTONS[517][2331]; | TR.AE | S | KEN | |
| BUTUI | K-60890; PI-520285; AFRC-7386 | SB-75129[145][541][740][1765]; | TR.AE | S | BRA:Rio-Grande-Do-Sul |
| BUXOM | PI-672165 | BUFFALO[2965]; | TR.SE | S | USA:Arizona |
| BUYAN | TR.AE | S | RUS:Krasnodar | ||
| BUZKALA | TR.AE | I | UZB | ||
| BUZOGANY | TR.AE | W | HUN | ||
| BUZZER | AFRC-10060 | SUR-HD-99725-18[4136]; | TR.AE | W | GBR |
| BV-1,S | K-23948 | TR.AE | S | IND | |
| BV-1,W | K-23988 | TR.AE | W | IND | |
| BV-2 | K-23950 | TR.AE | I | IND |