The libraries, specimen and collection cabinets

About the Hodgdon Herbarium (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.


Hours of Operation


The herbarium is open from 9 - 5 Monday through Friday except University holidays and during field season. The herbarium is located in room G-69 on the ground floor of Spaulding Life Science Building. No food may be brought into the collections facility. Directions and maps for visitors to the UNH campus are available here.


Collections Manager: Dr. Janet Sullivan
Director: Dr. Chris Neefus
Curator of Marine Algae: Dr. Art Mathieson


Please click here for the Collections Management Policies