**Code**: [OKL](https://sweetgum.nybg.org/science/ih/herbarium-details/?irn=126776) **Organization**: University of Oklahoma **Department**: Department of Microbiology and Plant Biology **Location**: Norman, Oklahoma, U.S.A. **Total number of specimens**: 275000 **Current status**: Active **Date founded**: 1920 **Geographic coverage**: Oklahoma; Ozark Plateau; Ouachita Uplift; Gulf Coastal Plain; grasslands; southwestern U.S.; northern Mexico. **Incorporated herbaria**: Phillips University., ORU (aquatic vascular plants and Characeae, ca. 5000 specimens, 2010) **Important collectors**: R. S. Bebb, N. H. Boke, B. F. Bush, G. J. Goodman, M. Hopkins, R. E. Jeffs, F. J. Lindheimer, E. L. Little, Jr., J. R. Massey, W. S. Meyers, A. Nelson, R. A. Nelson, P. Nighswonger, P. B. Sears, J. C. Shirley, T. R. Stemen, G. W. Stevens, A. H. Van Vleet, U. T. Waterfall, L. R. Wilson, T. Zanoni **Notes**: Updated Jul 2016 (address, curator update). Oklahoma collections being incorporated into Oklahoma Vascular Plants database, http://geo.ou.edu/botanical/ **Date modified in Index Herbariorum**: 2022-11-15 > [!cite] This page is automatically generated • Data on this page were obtained from [Index Herbariorum](https://sweetgum.nybg.org/science/ih/) on 2023-08-23. • Meaning of acronyms in TL-2 is not always the same as in IH. Consult list of original [[Abbreviations|abbreviations]] if you suspect acronym mismatch.