**Code**: [TUC](https://sweetgum.nybg.org/science/ih/herbarium-details/?irn=126589) **Organization**: University of Arizona **Department**: Ecology and Evolutionary Biology Department **Location**: Tucson, Arizona, U.S.A. **Total number of specimens**: 1200 **Current status**: Active **Important collectors**: E. N. Transeau, O. Nordstedt, W. A. Setchell **Notes**: Updated April 2020. TUC incorporated in part (algae of northern Gulf of California, especially E. Yale Dawson's collections) in ARIZ; Transeau collection of Zygnemataceae transferred to DePaul University in 1993, and then to the Academy of Natural Sciences of Philadelphia (PH) in 1997. **Date modified in Index Herbariorum**: 2020-05-05 > [!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.