Northern Illinois University Herbarium (DEK)

he herbarium at NIU is an internationally recognized systematic collection, initiated in the 1960s and enlarged significantly during the 1970s to the present. Holdings presently total about 19,000 specimens of vascular plants plus an additional 8000 bryophytes. A very large portion of the bryophytes (about 6000 specimens) is on permanent loan to MO (Missouri Botanic Garden).
Special collections include a definitive collection of the genus Dahlia, which contains holotypes and isotypes plus a thoroughly documented array of hybrids between authenticated wild species. A second important collection is of Arbutus that also includes type material. The troublesome genus Agrimonia is more completely documented at DEK than at any other herbarium in the world. DEK presently maintains exchange relationships with more than 26 domestic and 6 foreign herbaria. As a consequence, coverage, while emphasizing the flora of Illinois, is worldwide.
Contacts: Paul Sørensen,
Collection Type: Preserved Specimens
Management: Live Data managed directly within data portal
Global Unique Identifier: 611fe4d6-8e33-4b97-9d2a-ba1c34d20dda
Digital Metadata: EML File
Department of Biological Sciences
Northern Illinois University
DeKalb, Illinois   60115
Collection Statistics
  • 5,763 specimen records
  • 5,244 (91%) georeferenced
  • 5,352 (93%) with images (5,392 total images)
  • 5,127 (89%) identified to species
  • 61 families
  • 434 genera
  • 1,310 species
  • 1,446 total taxa (including subsp. and var.)
Extra Statistics