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Oklahoma State University Herbarium (OKLA)

The OSU Herbarium contains approximately 157,000 vascular plant specimens, about two-thirds of which were collected in Oklahoma and surrounding states. The oldest specimen dates from 1843, and the collection contains 300 type specimens. Since its establishment in 1920, it has been curated by Henry Ira Featherly (1925-1937), Robert Stratton (1937-1949), Umalde Theodore (“Ted”) Waterfall (1949-1971), and Ronald Tyrl (1972-2008). Since 2009, Mark Fishbein has been the herbarium director. The herbarium houses a seed/fruit collection, cryptogamic collection, and botanical library.



  • Mark Fishbein, mark.fishbein@okstate.edu

Collection Statistics

  • 81,558 specimen records
  • 26,759 (33%) georeferenced
  • 53,864 (66%) with images (55,610 total images)
  • 78,425 (96%) identified to species
  • 201 families
  • 1,319 genera
  • 4,846 species
  • 6,018 total taxa (including subsp. and var.)

Extra Statistics

Collection Type: Preserved Specimens
Management: Live Data managed directly within data portal
Last Update: 2 July 2024
Global Unique Identifier: 4f8ecaf5-6ea8-4b39-81d7-123e4a282468
Digital Metadata:EML File
Rights Holder: Oklahoma State University
Geographic Distribution - Peru
Click on the specimen record counts within the parenthesis to return the records for that term