**Code**: [CAS](https://sweetgum.nybg.org/science/ih/herbarium-details/?irn=124156) **Organization**: California Academy of Sciences **Department**: Department of Botany **Location**: San Francisco, California, U.S.A. **Total number of specimens**: 2300000 **Current status**: Active **Date founded**: 1853 **Taxonomic coverage**: Vascular plants; lichens; bryophytes; introduced weeds; ornamentals **Geographic coverage**: Worldwide, especially western North America, California, and northern Latin America, Europe, Madagascar, China, Philippines and Galapagos Islands **Incorporated herbaria**: DS (750 000 specimens, including 4000 CI specimens) in 1976, SFRF (4050 specimens) in 1980, HAY (4000 specimens) in 2018 **Important collectors**: F. Almeda, E. Asplund, C. F. Austin, M. S. Baker, R. C. Barneby, H. Behr, E. Betche, P. E. Boissier, L. A. Boyd, D. E. Breedlove, E. Cannon, H. C. Cheo, C. Y. Chiao, M. Clemens, J. Clemens, I. W. Clokey, E. Contreras, T. Daniel, A. Eastwood, C. F. Ecklon, H. F. A. von Eggers, P. A. C. Endress, W. J. Eyerdam, F. E. L. von Fischer, F. von Fleischer, J. C. Frank, P.W. Fritsch, P. H. Gentle, J. L. Gressitt, G. Haley, G. E. L. Hampe, C. B. Hardham, A. A. Heller, J. A. Heuffel, R. F. Hohenacker, R. F. Hoover, D. Horton, J. T. Howell, S. Y. Hu, D. Jamieson, M. C. Johnson, E. Johnston, I. M. Johnston, G. N. Jones, T. H. Kearney, A. Kellogg, M. E. Kerr, G. Klug, S. K. Lau, H. Leschke, J. M. Linsdale, M. A. Linsdale, C. L. Lundell, E. Lyonnet, T. Makino, H. L. Mason, J. F. Maxwell, E. M. McClintock, F. A. McClure, C. H. Merriam, E. D. Merrill, Y. E. J. Mexia, F. J. F. Meyen, C. A. von Meyer, T. K. Newell, H. L. Oosting, P. S. Pallas, H. M. Pollard, M. P. Porsild, C. G. Pringle, C. R. Quick, G. L. Rabenhorst, P. H. Raven, H. D. Ripley, R. C. Rollins, L. S. Rose, P. Rubtzoff, J. Rzedowski, J. H. Schaffner, G. H. A. Scheele, G. H. W. Schimper, D. F. L. von Schlechtendal, J. R. Shevock, F. W. Sieber, M. Smith, G. L. Smith, W. von Spruner, R. S. Squire, J. W. Stacey, A. Stewart, S. G. Stokes, W. N. Suksdorf, H. Swarth, Y. W. Taam, A. Tiehm, D. Toren, G. True, W. T. Tsang, E. C. Twisselmann, J. L. M. Vahl, E. Walther, E. Werdermann, C. R. Wheeler, M. J. Williams, H. M. Willkomm, E. H. Wilson, C. L. P. Zeyher. **Notes**: Updated Oct. 2021 (specimen total update). Dudley Herbarium (DS) of Stanford University moved to CAS in 1976 and fully integrated, although DS retains separate identity. Loan requests for either herbarium should be addressed to CAS. For information on DS see SAN FRANCISCO (DS). Herbarium of Cal State East Bay (HAY) incorporated 2018; many collections lost, approximately 4,000 salvaged. CAS algae now housed at UC. CAS fungi now housed at BPI and NY. Except for type specimens, most collections made before 1906 were destroyed in that year by San Francisco earthquake and fire. **Date modified in Index Herbariorum**: 2022-10-24 > [!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.