Number of specimens in the different Botany Department collections:
| Collections | What's included | Specimens | Type specimens |
|---|---|---|---|
| Seed plants | Flowering plants and gymnosperms | 3,818,000 | 110,000 |
| Pollen and spores | Pollen and spores | 13,000 | - |
| Ferns and lycophytes | Ferns, clubmosses and quillworts | 280,000 | 7,000 |
| Bryophytes | Mosses, liverworts and hornworts | 900,000 | 32,000 |
| Diatoms | Recent and fossil diatoms | 300,000 | 12,000 |
| Algae (excluding diatoms) | Marine (seaweeds, coraline and microalgae) and freshwater (stoneworts and other micro and macro algae) | 232,000 | 10,000 |
| Lichens | Lichens, parasymbionts | 395,000 | 10,000 |
| Slime moulds | Slime moulds (Myxomycetes) | 51,000 | 250 |