| Abbreviation | Definition |
|---|---|
| BR | Brown Root |
| BRIT | Botanical Research Institute of Texas |
| BRM | Botanic Reference Material |
| BSBI | Botanical Society of Britain Ireland |
| BSDM | Brown Stripe Downy Mildew |
| BSI | Botanical Solution Inc |
| BSIA | Botanical Special Interest Areas |
| BSP | Biodiversity Support Program |
| BTTG | Back To The Garden |
| BTTR | Back To The Roots |
| BUD | Botanical Utility Droid |
| BVNH | Botanische Vereinigung für Naturschutz in Hessen (German: Botanical Association for Nature Conservation in Hessen ) |
| BWICS | Biological Warning and Incident Characterization System |
| C | Chrysanthemum |
| C | Climbing |
| CAM | Crassuleacean Acid Metabolism |
| Care | Carex sp. |
| CBD | Conservation Biodiversity Development |
| CBG | Chicago Botanic Garden |
| CBHL | Council on Botanical and Horticultural Libraries, |