The Museum's Bryophyte herbarium is among the largest in the world, incorporating more than 900,000 specimens.
The majority of the herbaria were accumulated by notable bryologists in the late eighteenth to early twentieth centuries.
These pioneers of bryophyte taxonomy described thousands of new taxa from every continent and consequently the Museum now holds 32,000 type specimens.
The Museum has more recently acquired important material from:
- New Zealand
- Ascension Island
New taxonomic and distributional data has been, and more remain to be, revealed through examination of this material.