Miami University, Willard Sherman Turrell Herbarium (MU)

Miami University is the home of Ohio's largest herbarium, the Willard Sherman Turrell Herbarium. The herbarium's holdings of approximately 620,000 specimens are worldwide in both geographical and taxonomic coverage. The collection consists of 330,000 vascular plant specimens, as well as 140,000 bryophytes, 100,000 fungi, 35,000 lichens, 10,000 algae, and 5,000 fossil plants. There are several thousand type specimens contained in the collection, as well as many sets of cryptogamic exsiccatae. Active exchange programs are ongoing with many herbaria worldwide to ensure the continued breadth and depth of the collection. The W.S. Turrell Herbarium Fund is an endowment which benefits the herbarium, and is restricted to support of the research activities of the staff and students in systematic botany.
Curator: Gretchen Meier,, (513) 529-2755
Collection Type: Preserved Specimens
Management: Data snapshot of local collection database
Last Update: 3 June 2024
Digital Metadata: EML File
Cite this collection:
Miami University, Willard Sherman Turrell Herbarium. Occurrence dataset (ID: b41707b7-2792-4f75-b1b7-4f1f35c65542) accessed via the PteridoPortal Portal,, 2024-06-18).
Collection Statistics
  • 12,031 specimen records
  • 10,138 (84%) georeferenced
  • 9,973 (83%) with images (19,726 total images)
  • 11,003 (91%) identified to species
  • 37 families
  • 151 genera
  • 1,557 species
  • 1,691 total taxa (including subsp. and var.)
Extra Statistics
Taxon Distribution
Taxon Distribution