The Albion Hodgdon Herbarium and the associated Sumner Pike Library are housed in the Spaulding Life Sciences building of the Biological Sciences Complex. The herbarium comprises approximately 200,000 specimens (120,000 vascular plants, 80,000 marine algae, and 1600 bryophytes and lichens). The herbarium contains a combination of historic and recently collected specimens, including 102 nomenclatural type specimens and voucher specimens supporting taxonomic, ecological, and biogeographic research. While our specimens represent plant species worldwide, the collections emphasize northeastern North America and are especially strong in representing freshwater and marine habitats. An additional strength is our extensive collection of Neotropical aquatic species.