The OSU Herbarium contains approximately 140,000 specimens, largely from Oklahoma and
surrounding states. The oldest specimen dates from 1862, and there are 215 types. Since
its establishment in 1920, it has been curated by Ron Tyrl, R. Stratton, H. I. Featherly,
and U. T. Waterfall. Its current director is Mark Fishbein, a taxonomist and systematicist.
The herbarium also houses a seed/fruit collection, a cryptogamic collection, library of
botanical books, and a complete set of topographical maps of the State of Oklahoma.
The OSU Herbarium is part of a statewide database created through grant support by
the National Science Foundation; the Environmental Protection Agency; and the Oklahoma
Biological Survey. You can search the database and learn more about it by accessing the