University of New Hampshire Hodgdon Herbarium (UNH-NHA)

Since June 1996 the Albion Hodgdon Herbarium and the associated Sumner Pike Library have been 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 550 bryophytes and lichens). A space-saving compactor system for specimen storage allows for a significant increase in the size of the collection in the coming years. The herbarium contains a combination of historic and recently collected specimens, including 97 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. Taxonomic Coverage: Vascular plants and marine algae; aquatic flora. Geography: New Hampshire; Maine; coastal New England; Newfoundland; Bay of Fundy; Crimea, Siberia; northeastern U.S., Costa Rica, and Bolivia. Founded 1892.
Contact: Arthur Mathieson, Curator of Marine Algae (
Collection Type: Preserved Specimens
Management: Data snapshot of local collection database
Last Update: 25 January 2019
Digital Metadata: EML File
Rights Holder: University of New Hampshire
Access Rights: Public Domain
Albion R. Hodgdon Herbarium
Department of Biological Sciences
University of New Hampshire
Durham, New Hampshire   03824-2617
[1] 603 862 3865
Collection Statistics
  • 423 specimen records
  • 422 (100%) georeferenced
  • 398 (94%) identified to species
  • 31 families
  • 44 genera
  • 64 species
  • 64 total taxa (including subsp. and var.)
Extra Statistics