Northern Kentucky University, John W. Thieret Herbarium (KNK)

The John W. Thieret Herbarium (KNK) at Northern Kentucky University, in Highland Heights, Kentucky, specializes in flora of the southeastern and midwestern US. Most of our approximately 30,000 collections are from Kentucky, Louisiana, Mississippi, and Ohio. In addition, we have many specimens from the Canadian Arctic, which was one of Dr. Theiret's regions of interest. Due to the combined efforts of Dr. Thieret and Dr. Naczi, we also have especially good collections of sedges (Cyperaceae) and grasses (Poaceae).
Contact: Maggie Whitson (
Collection Type: Preserved Specimens
Management: Data snapshot of local collection database
Last Update: 22 October 2018
Digital Metadata: EML File
John W. Thieret Herbarium
Department of Biological Sciences
Northern Kentucky University
Highland Heights, KY   41099
Collection Statistics
  • 26,516 specimen records
  • 1,114 (4%) georeferenced
  • 22,912 (86%) with images
  • 25,199 (95%) identified to species
  • 240 families
  • 1,503 genera
  • 4,508 species
  • 4,779 total taxa (including subsp. and var.)
Extra Statistics