Ada Hayden Herbarium at Iowa State University (ISC)

The Ada Hayden Herbarium has the largest collection of Iowa plants and fungi, containing over 600,000 specimens of vascular plants, bryophytes, fungi, and lichens. Functioning primarily as a research facility important for taxonomic studies (occurrence, distribution, and relationships of plants), it is also used for identifying unknown plants. Specimens are loaned to specialists at other institutions around the world to support research. Loans from other institutions allow our researchers access to other herbaria. Recently, herbaria have become a source of materials to use in molecular studies and to support basic research on biodiversity.
Contacts: Deborah Lewis; Jim Colbert,;
Collection Type: Preserved Specimens
Management: Live Data managed directly within data portal
Global Unique Identifier: 06d3d6a4-9436-44ea-92ea-13445d7fa38f
Digital Metadata: EML File
Collection Statistics
  • 6,593 specimen records
  • 1,710 (26%) georeferenced
  • 6,405 (97%) identified to species
  • 81 families
  • 267 genera
  • 851 species
  • 867 total taxa (including subsp. and var.)
Extra Statistics
Taxon Distribution
Taxon Distribution