The MBLWHOI Library Herbarium (SPWH), formerly the Marine Biological Laboratory Herbarium, documents the flora of Cape Cod, Massachusetts, and adjacent islands. The collection, dating back to the 1870s, consists of more than 9,000 specimens. The MBLWHOI Library Herbarium is housed at the Data Library & Archives, McLean Laboratory, Woods Hole Oceanographic Institution Quissett Campus. Visits to the Herbarium are available by appointment only. Contact the Herbarium at 508-289-4948.