**Code**: [OSC](https://sweetgum.nybg.org/science/ih/herbarium-details/?irn=125620) **Organization**: Oregon State University **Department**: Botany and Plant Pathology Department **Location**: Corvallis, Oregon, U.S.A. **Total number of specimens**: 600000 **Current status**: Active **Date founded**: 1886 **Taxonomic coverage**: All groups; hypogeous fungi, Glomales **Geographic coverage**: Worldwide, mainly the Pacific Northwest **Incorporated herbaria**: WILLU (32 000 specimens) in 1976, LAGO (in part), ORE (110 000 specimens) in 1993, fungi of U.S. Forest Service Pathology Herbarium. **Important collectors**: Y. Asahina, W. H. Baker, K. L. Chambers, W. B. Cooke, W. C. Cusick, L. E. Detling, M. A. Flinn, M. Fomin, A. S. Foster, T. C. Frye, H. C. Gilbert, H. M. Gilkey, M. W. Gorman, R. R. Halse, L. F. Henderson, T. J. Howell, D. C. Ingram, O. L. Ireland, L. D. Johnston, W. E. Lawrence, E. Lawton, L. C. Leach, J. B. Leiberg, F. A. MacFadden, G. Mason, J. C. Nelson, M. E. Peck, L. H. Pike, E. I. Sanborn, E. P. Sheldon, F. P. Sipe, A. N. Steward, W. N. Suksdorf, P. Train, J. M. Trappe, D. H. Wagner, C. D. White, K. Whited **Notes**: Updated June 2023 WILLU not interfiled. ORE interfiled with OSC. Specimens from ORE, OSC, and WILLU sent on all loan requests and should be cited based on the original herbarium. **Date modified in Index Herbariorum**: 2023-06-29 > [!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.