| Name | Accession number | Synonym | Species | Habit | Locality |
|---|---|---|---|---|---|
| B.I.P. | B-I-P[000]; | TR.AE | S | AUS:Queensland | |
| B.I.P.M. | K-40112 | TR.AE | S | AUS | |
| BIRCH-65 | B-65[3768][3810]; | TR.AE | W | AUS | |
| BIRDPROOF | K-27199; PI-278495; AUS-17175; AUS-10749 | AMERICAN-8,ZAF[39]; TUZELA[39]; | TR.AE | S | ZAF |
| BIRD-PROOF | HYBRID-19-CARTER[39]; | TR.AE | W | GBR | |
| BIRDPROOF-1234 | AUS-1948 | TR.AE | AUS | ||
| BIRGISCH | TR.AE | W | CHE | ||
| BIRGISCH-80-D | TR.AE | W | CHE | ||
| BIRGITTA | K-5186; PI-192413; NGB-6706 | SV-0865[221]; | TR.AE | W | SWE |
| BIRIMIRKA-17-1-57-IZR | K-46164 | BIRIMIRKA-17-1-57[541]; | TR.AE | S | BGR |
| BIRLIK | K-57168 | DOSTLUG[1365]; LUTESCENS-1711-N-66[541]; | TR.AE | W | AZE:Nagornyi-Karabakh,RUS:Krasnodar |
| BIRLONG | TR.AE | S | AUS:New-South-Wales | ||
| BIRSK | TR.AE | ||||
| BIRYUSA | K-64876 | TR.AE | S | RUS:Krasnoyarsk | |
| BIRYUSINKA | K-47885; PI-404240; AUS-18171 | TR.AE | S | RUS:Irkutsk | |
| BIRYUZA | LUTESCENS-9923-H-337[1371]; LUTESCENS-9923-H-377[3315]; | TR.AE | W | RUS:Krasnodar,Samara | |
| BIS | TR.AE | W | RUS:Vladimir | ||
| BISAGI | TR.AE | S | RWA | ||
| BISCARD | CV-4[000]; | TR.AE | S | ||
| BISCAY | RICP-01C0106256 | CPBT-96-23[4136]; CPB-T-W-55[000]; | TR.AE | W | GBR |