**Code**: [OAC](https://sweetgum.nybg.org/science/ih/herbarium-details/?irn=126666) **Organization**: University of Guelph **Department**: Biodiversity Centre of Ontario **Location**: Guelph, Ontario, Canada **Total number of specimens**: 83000 **Current status**: Active **Date founded**: 1883 **Taxonomic coverage**: Especially ferns and introduced species; early Canadian collections **Geographic coverage**: Ontario; North America and worldwide **Important collectors**: D. M. Britton, J. F. Calvert, N. H. Cowdry, L. O. Gaiser, R. S. Hamilton, W. Herriot, J. E. Howitt, M. Landon, J. M. Macoun, W. C. McCalla, F. H. Montgomery, N. Tripp **Notes**: Updated Mar 2015 (new address). **Date modified in Index Herbariorum**: 2018-02-06 > [!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.