**Code**: [US](https://sweetgum.nybg.org/science/ih/herbarium-details/?irn=125976) **Organization**: Smithsonian Institution **Division**: NMNH, MRC-166 **Department**: Department of Botany **Location**: Washington, District of Columbia, U.S.A. **Total number of specimens**: 5100000 **Current status**: Active **Date founded**: 1848 **Taxonomic coverage**: All groups (except fungi) **Geographic coverage**: Worldwide with emphasis on neotropics, North America, Pacific Islands, Philippines, and Indian subcontinent **Incorporated herbaria**: Part of LCU (Cyperaceae), lichens of MO, part of NTS, types of USFS, part of GMS (types and G. J. Hollenberg collections), part of Biltmore Herbarium, Beaudette Foundation Marine Herbarium, Mouillefarine Herbarium, cryptogams of Goucher College, LGO, USNC (28000 specimens) **Important collectors**: W. L. Abbott, A. Alfaro, H. A. Allard, Fr. G. Arsène, C. G. Baenitz, M. Bang, R. O. Belcher, B. Berlin, S. F. Blake, L. J. Brass, E. L. Braun, W. E. Broadway, O. Buchtien, W. M. Canby, A. W. Chapman, A. Chase, M. Clemens, O. F. Cook, F. V. Coville, J. Cuatrecasas, A. H. Curtiss, E. Y. Dawson, F. E. Drouet, A. Ducke, W. W. Eggleston, A. D. E. Elmer, A. W. Evans, W. D. Fleming, G. Forrest, F. R. Fosberg, M. H. Foslie, J. C. Frémont, H. G. Galeotti, A. F. M. Glaziou, E. A. Goldman, D. Griffiths, M. E. Hale, O. Haught, A. A. Heller, G. B. Hinton, A. S. Hitchcock, G. J. Hollenberg, A. Jahn, Jr., M. E. Jones, W. A. Kellerman, E. P. Killip, G. Klug, W. N. Koelz, F. Lamson-Scribner, A. B. Langlois, J. B. Leiberg, E. C. Leonard, A. Mann, W. R. Maxon, F. A. McClure, E. A. Mearns, E. D. Merrill, J. T. Moggridge, C. T. Mohr, T. Morong, C. V. Morton, J. C. B. Mutis y Bosio, E. W. Nelson, C. R. Orcutt, E. C. A. Purpus, J. F. Rock, J. N. Rose, H. H. Rusby, P. A. Rydberg, W. E. Safford, J. H. Sandberg, F. R. R. Schlechter, R. E. Schultes, A. F. Skutch, A. C. Smith, H. H. Smith, J. D. Smith, L. B. Smith, L. A. Spetzman, P. C. Standley, E. S. Steele, W. N. Suksdorf, J. R. Swallen, W. R. Taylor, I. F. Tidestrom, A. Tonduz, G. R. Vasey, H. von Türckheim, E. H. Walker, L. F. Ward, S. Watson, I. L. Wiggins, H. Willey, T. A. Williams, E. O. Wooton, C. Wright **Notes**: All requests should be sent to [email protected]. Please use this address for parcel and courier delivery: Smithsonian Institution, NMNH, MRC-166, Department of Botany, West Loading Dock, 10th & Constitution Avenue, NW, Washington, District of Columbia 20560, U.S.A. US fungi transferred to BPI. US has collections from U.S. South Pacific Exploring Expedition (1838-1842), U.S. North Pacific Exploring Expedition (1853-1856), LaPlata Expedition (1853-1856), Mexican Boundary Survey (1854-1855), California Geological Survey (1860-1867), International Boundary Commission: U.S. and Mexico (1892-1894), Colombia Cinchona missions (1940-1945), Bureau of Science (Philippines), Harriman Alaskan Expedition, and Regnell Expeditions (Brazil). 66% of the US National Herbarium collections have been digitized (roughly 2.5 million catalog records). 33% have been imaged as well as digitized. **Date modified in Index Herbariorum**: 2021-11-16 > [!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.