**Code**: [RSA](https://sweetgum.nybg.org/science/ih/herbarium-details/?irn=125756) **Organization**: California Botanic Garden **Location**: Claremont, California, U.S.A. **Total number of specimens**: 1230000 **Current status**: Active **Date founded**: 1927 **Taxonomic coverage**: Cactaceae; Crossosomataceae; Goodeniaceae; Midaceae; Poaceae; Polemoniaceae; Restionaceae; Stylidiaceae; <Arctostaphylos>; <Astragalus>; <Camissonia>; <Ceanothus>, <Cupressus>; <Iris>; <Ranunculus>; aquatic phanerogams **Geographic coverage**: Worldwide, with emphasis on California (especially southern half of state); arid, semi-arid, and Mediterranean climates; Mexico; Russia and former U.S.S.R. republics; Australasia and other Pacific **Incorporated herbaria**: POM (370 000 specimens) in 1951, phanerogams (115 000 specimens) of AHFH, LAM, and USC in 1986, vascular plants (4500 specimens) of CSPU in 2000., vascular cryptogams (9300 specimens) of LAM, including AHFH, SFV, USC, in 2003, vascular plants (5500 specimens) of Santa Ana College in 2004., some vascular plants from Pierce College Herbarium (after 2004). **Important collectors**: C. F. Baker, R. C. Barneby, L. Benson, S. Boyd, A. Davidson, C. Davidson, P. H. Davis, M. DeDecker, M. B. Dunkle, F. R. Fosberg, H. S. Gentry, V. Grant, R. Gustafson, G. B. Hinton, E. C. Jaeger, M. E. Jones, C. L. Lundell, Y. E. J. Mexia, P. A. Munz, E. Palmer, F. W. Peirson, C. G. Pringle, P. H. Raven, J. C. Roos, T. S. Ross, A. C. Sanders, R. F. Thorne, L. C. Wheeler, C. B. Wolf **Notes**: Updated Aug 2017 (specimen total and staff). Since 1951, POM and RSA have been housed together at RSA; since 1966 the two collections have been fully integrated. Total number of specimens for RSA reflects combined holdings of the integrated collections. A loan request to either institution is considered also as a request to the other. Specimens from Pomona College Herbarium should be cited as POM. Macrofungi, algae, lichens, and bryophytes from RSA and POM (about 25 000 specimens) transferred to LAM, from where they were transferred to UC. Contact Andrew S. Doran, [email protected]. R. K. Benjamin research specimens of Laboulbeniales and zygomycetes transferred to FH. RSA ancillary collections include 37 000 cones and fruit, wood blocks, wood and pollen slides. **Date modified in Index Herbariorum**: 2022-10-17 > [!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.