# List of herbaria in North America

This is a list of herbaria in North America, organized first by country or region where the herbarium is located, then within each region by size of the collection. All herbarium codes follow the Index Herbarium. For other continents, see List of herbaria.

## Canada

Herbaria in Canada :
| Name | No. Specimens | Code | Province | City |
| Agriculture and Agri-Food Canada, Vascular Plant Herbarium | 1,335,000 | DAO, DAOM | Ontario | Ottawa |
| Royal Ontario Museum | 860,000 | TRT, TRTC | Ontario | Toronto |
| Herbier Marie-Victorin, Université de Montréal | 850,000 | MT | Quebec | Montréal |
| National Herbarium of Canada, Canadian Museum of Nature | 838,000 | CAN, CANM | Ontario | Ottawa |
| Herbier Louis-Marie, Université Laval | 770,000 | ULF | Quebec | Quebec City |
| University of British Columbia | 560,000 | UBC | British Columbia | Vancouver |
| University of Alberta | 320,000 | ALTA | Alberta | Edmonton |
| E.C. Smith Herbarium, Acadia University | 200,000 | ACAD | Nova Scotia | Wolfville |
| Royal British Columbia Museum | 188,000 | V | British Columbia | Victoria |
| W.P. Fraser Herbarium, University of Saskatchewan | 160,000 | SASK | Saskatchewan | Saskatoon |
| Royal Alberta Museum | 160,000 | PMAE | Alberta | Edmonton |
| Herbier du Québec | 153,000 | QUE | Quebec | Quebec City |
| Fowler Herbarium, Queen's University | 142,000 | QK | Ontario | Kingston |
| McGill University Herbarium | 137,000 | MTMG | Quebec | Montreal |
| Agnes Marion Ayre Herbarium, Memorial University of Newfoundland | 120,000 | NFLD | Newfoundland and Labrador | St. John's |
| Claude Garton Herbarium, Lakehead University | 105,000 | LKHD | Ontario | Thunder Bay |
| University of Manitoba Herbarium, University of Manitoba | 90,000 | WIN | Manitoba | Winnipeg |
| George F. Ledingham Herbarium, University of Regina | 70,000 | USAS | Saskatchewan | Regina |
| Connell Memorial Herbarium, University of New Brunswick | 67,000 | UNB | New Brunswick | Fredericton |
| RBG Herbarium, Royal Botanical Gardens | 60,000 | HAM | Ontario | Burlington |
| University of Lethbridge Herbarium, University of Lethbridge | 21,800 | LEA | Alberta | Lethbridge |

## Central America and the Caribbean

The table below lists herbaria located in Central America and the Caribbean.
Herbaria in Central America :
| Name | No. Specimens | Code | Country | City |
| Instituto de Ecología y Sistemática | 400,000 | HAC | Cuba | Havana |
| Herbario Paul C. Standley, Escuela Agrícola Panamericana | 240,000 | EAP | Honduras | Tegucigalpa |
| Herbario Nacional, Museo Nacional de Costa Rica | 215,000 | CR | Costa Rica | San José |
| Institute of Jamaica | 125,000 | IJ | Jamaica | Kingston |
| Instituto Nacional de Biodiversidad | 110,000 | INB | Costa Rica | Santo Domingo de Heredia |
| Herbario Prof. Dr. J. Bisse, Jardín Botánico Nacional | 100,000 | HAJB | Cuba | Havana |
| Jardín Botánico Nacional Dr. Rafael M. Moscoso | 100,000 | JBSD | Dominican Republic | Santo Domingo |
| Centro Oriental de Ecosistemas y Biodiversidad | 92,000 | BSC | Cuba | Santiago de Cuba |
| Herbario Luis A. Fournier, Universidad de Costa Rica | 90,000 | USJ | Costa Rica | San José |
| University of San Carlos of Guatemala | 84,000 | AGUAT, BIGU, USCG | Guatemala | Guatemala City |
| The National Herbarium of Trinidad and Tobago | 70,000 | TRIN | Trinidad | St. Augustine |
| University of Panama | 67,000 | PMA | Panama | Panama City |
| Cyril Hardy Nelson-Sutherland Herbarium, National Autonomous University of Honduras | 45,000 | TEFH | Honduras | Tegucigalpa |
| University of Puerto Rico | 43,000 | UPRRP | Puerto Rico (USA) | San Juan |
| Universidad de El Salvador | 35,000 | ITIC | El Salvador | San Salvador |
| University of the West Indies | 34,000 | UCWI | Jamaica | Kingston |
| Herbario Rafael M. Moscoso, Pontificia Universidad Católica Madre y Maestra | 25,000 | UCMM | Dominican Republic | Santiago de los Caballeros |
| Universidad del Valle de Guatemala | 25,000 | UVAL | Guatemala | Guatemala City |
| National Autonomous University of Nicaragua | 25,000 | HULE | Nicaragua | León |
| Asociación Jardín Botánico La Laguna, Urbanización Plan de La Laguna | 25,000 | LAGU | El Salvador | La Libertad |
| Herbario Juvenal Valerio Rodríguez, National University of Costa Rica | 15,000 | JVR | Costa Rica | Heredia |
| Herbario Nacional de Nicaragua, Universidad Centroamericana | 15,000 | HNMN | Nicaragua | Managua |
| Smithsonian Tropical Research Institute | 15,000 | SCZ, STRI | Panama | Balboa |
| Forest Department Herbarium, Ministry of Natural Resources, Local Government, and the Environment | 10,000 | BRH | Belize | Belmopan |
| Rafael M. Moscoso Herbarium, Universidad Autónoma de Santo Domingo | 10,000 | USD | Dominican Republic | Santo Domingo |

## Mexico

Herbaria in Mexico :
| Name | No. Specimens | Code | State | City |
| Universidad Nacional Autónoma de México | 1,120,000 | MEXU | Distrito Federal | Mexico City |
| Instituto Politécnico Naciona, Mexico | 950,000 | ENCB | Distrito Federal | Mexico City |
| Instituto de Ecología, A.C. | 310,000 | XAL | Veracruz | Xalapa |
| Universidad de Guadalajara | 169,000 | IBUG | Jalisco | Zapopan |

## United States

Herbaria in the United States :
| Name | Affiliated With | No. Specimens | Code | State | City | Website |
| William and Lynda Steere Herbarium | New York Botanical Garden | 7,300,000 | NY | New York | Bronx, New York City | |
| Missouri Botanical Garden Herbarium | Missouri Botanical Garden | 6,370,000 | MO | Missouri | St. Louis | |
| Harvard University Herbaria | Harvard University | 5,005,000 | A, AMES, ECON, FH, GH | Massachusetts | Cambridge | |
| United States National Herbarium | Smithsonian Institution | 4,340,000 | US | District of Columbia | Washington | |
| Field Museum Herbarium | Field Museum | 2,650,000 | F | Illinois | Chicago | |
| University and Jepson Herbaria | University of California, Berkeley | 2,200,000 | UC/JEPS | California | Berkeley | |
| California Academy of Sciences Herbarium | California Academy of Sciences | 2,300,000 | CAS, DS | California | San Francisco | |
| University of Michigan Herbarium | University of Michigan | 1,700,000 | MICH | Michigan | Ann Arbor | |
| Academy of Natural Sciences Herbarium | Academy of Natural Sciences | 1,430,000 | PH | Pennsylvania | Philadelphia | |
| Wisconsin State Herbarium | University of Wisconsin–Madison | 1,100,000 | WIS | Wisconsin | Madison | |
| Rancho Santa Ana Botanic Garden Herbarium | Rancho Santa Ana Botanic Garden | 1,230,000 | RSA | California | Claremont | |
| University of Texas at Austin Herbarium and the Lundell Herbarium | University of Texas at Austin | 1,006,000 | TEX/LL | Texas | Austin | |
| Botanical Research Institute of Texas Herbarium | Fort Worth Botanic Garden | 1,445,000 | BRIT | Texas | Fort Worth | |
| L.H. Bailey Hortorium Herbarium | Cornell University | 845,000 | BH | New York | Ithaca | |
| Rocky Mountain Herbarium | University of Wyoming | 806,800 | RM | Wyoming | Laramie | |
| Duke University Herbarium | Duke University | 800,000 | DUKE | North Carolina | Durham | |
| United States National Arboretum Herbarium | United States National Arboretum | 800,000 | NA | District of Columbia | Washington | |
| University of North Carolina Herbarium | University of North Carolina at Chapel Hill North Carolina Botanical Garden | 750,000 | NCU | North Carolina | Chapel Hill | |
| Oregon State University Herbarium | Oregon State University | 700,000 | OSC | Oregon | Corvallis | |
| S.L. Welsh Herbarium | Brigham Young University | 661,100 | BRY | Utah | Provo | |
| University of Washington Herbarium | University of Washington | 650,000 | WTU | Washington | Seattle | |
| University of Tennessee Herbarium | University of Tennessee, Knoxville | 650,000 | TENN | Tennessee | Knoxville | |
| University of Illinois Herbarium | University of Illinois, Urbana-Champaign | 640,000 | ILLS | Illinois | Champaign | |
| Ada Hayden Herbarium | Iowa State University | 640,000 | ISC | Iowa | Ames | |
| Herbarium Pacificum | Bishop Museum | 600,000 | BISH | Hawaii | Honolulu | |
| Willard Sherman Turrell Herbarium | Miami University | 570,000 | MU | Ohio | Oxford | |
| University of Colorado Museum of Natural History Herbarium | University of Colorado | 565,000 | COLO | Colorado | Boulder | |
| Michigan State University Herbarium | Michigan State University | 560,000 | MSC | Michigan | East Lansing | |
| Carnegie Museum of Natural History Herbarium | Carnegie Museum of Natural History | 525,000 | CM | Pennsylvania | Pittsburgh | |
| The Ohio State University Herbarium | The Ohio State University | 500,000 | OS | Ohio | Columbus | |
| University of Florida Herbarium | Florida Museum of Natural History University of Florida | 470,000 | FLAS | Florida | Gainesville | |
| University of Louisiana at Monroe Herbarium | University of Louisiana at Monroe | 430,000 | NLU | Louisiana | Monroe | |
| University of Arizona Herbarium | University of Arizona | 400,000 | ARIZ | Arizona | Tucson | |
| Cornell Plant Pathology Herbarium | Cornell University | 370,000 | CUP | New York | Ithaca | |
| Yale University Herbarium | Peabody Museum of Natural History Yale University | 365,000 | YU | Connecticut | New Haven | |
| Arizona State University Herbarium | Arizona State University | 360,000 | ASU | Arizona | Tempe | |
| Pringle Herbarium | University of Vermont | 350,000 | VT | Vermont | Burlington | |
| Brooklyn Botanic Garden Herbarium | Brooklyn Botanic Garden | 310,000 | BKL | New York | Brooklyn | |
| UC Davis Center for Plant Diversity | University of California, Davis | 300,000 | DAV, DAVH, AHUC | California | Davis | |
| New York State Museum Herbarium | New York State Museum | 278,662 | NYS | New York | Albany | |
| University of Georgia Herbarium | University of Georgia | 278,000 | GA | Georgia | Athens | |
| Illinois Natural History Survey Herbarium | Illinois Natural History Survey | 277,000 | ILLS | Illinois | Champaign | |
| University of Alaska Museum of the North Herbarium | University of Alaska Museum of the North | 270,000 | ALA | Alaska | Fairbanks | |
| Milwaukee Public Museum Herbarium | Milwaukee Public Museum | 250,000 | MIL | Wisconsin | Milwaukee | |
| North Dakota State University Herbarium | North Dakota State University | 250,000 | NDA | North Dakota | Fargo | |
| Southern Illinois University Herbarium | Southern Illinois University | 250,000 | SIU | Illinois | Carbondale | |
| Intermountain Herbarium | Utah State University | 280,000 | UTC | Utah | Logan | |
| Diatom Herbarium | Academy of Natural Sciences of Philadelphia | 245,000 | ANSP | Pennsylvania | Philadelphia | |
| University of South Florida Herbarium | University of South Florida | 235,000 | USF | Florida | Tampa | |
| Robert Bebb Herbarium | University of Oklahoma | 210,000 | OKL | Oklahoma | Norman | |
| West Virginia University Herbarium | West Virginia University | 210,000 | WVA | West Virginia | Morgantown | Archived 2019-02-01 at the Wayback Machine |
| R.K. Godfrey Herbarium | Florida State University | 206,000 | FSU | Florida | Tallahassee | |
| Robert W. Freckmann Herbarium | University of Wisconsin–Stevens Point | 200,000 | UWSP | Wisconsin | Stevens Point | |
| Stillinger Herbarium | College of Idaho | 200,000 | ID | Idaho | Moscow | |
| Morton Arboretum Herbarium | Morton Arboretum | 180,000 | MOR | Illinois | Lisle | |
| Fairchild Tropical Botanic Garden Herbarium | Fairchild Tropical Botanic Garden | 165,000 | FTG | Florida | Coral Gables | |
| Louisiana State University Herbarium | Louisiana State University | 159,000 | LSU | Louisiana | Baton Rouge | |
| Chrysler Herbarium | Rutgers University | 151,000 | CHRB | New Jersey | New Brunswick | |
| San Diego Natural History Museum Herbarium | San Diego Natural History Museum | 150,000 | SD | California | San Diego | |
| United States National Seed Herbarium | United States National Arboretum | 140,000 | BARC | District of Columbia | Washington | |
| Indiana University Herbarium | Indiana University | 140,000 | IND | Indiana | Bloomington | |
| Oklahoma State University Herbarium | Oklahoma State University | 140,000 | OKLA | Oklahoma | Stillwater | |
| Harry D. Thiers Herbarium | San Francisco State University | 140,000 | SFSU | California | San Francisco | |
| Austin Peay State University Herbarium | | 138,000 | APSC | Tennessee | Clarksville | |
| Humboldt State University Herbarium | | 132,000 | HSC | California | Arcata | |
| North Carolina State University Herbarium | | 125,000 | NCSC | North Carolina | Raleigh | |
| Louisiana Tech University Herbarium | | 122,635 | LTU | Louisiana | Ruston | |
| Santa Barbara Botanic Garden Herbarium | | 120,000 | SBBG | California | Santa Barbara | |
| Massey Herbarium | Virginia Tech | 116,000 | VPI | Virginia | Blacksburg | |
| Clinton Herbarium | Buffalo Museum of Science | 115,000 | BUF | New York | Buffalo | |
| Carl F. Chuey Herbarium | Youngstown State University | 115,000 | YUO | Ohio | Youngstown | |
| Illinois State Museum Herbarium | | 114,000 | ISM | Illinois | Springfield | |
| Claude E. Phillips Herbarium | Delaware State University | 110,000 | DOV | Delaware | Dover | |
| A.C. Moore Herbarium | University of South Carolina | 110,000 | USCH | South Carolina | Columbia | |
| Eastern Kentucky University Herbarium | | 103,000 | EKY, BEREA | Kentucky | Richmond | |
| Arthur Herbarium | Purdue University | 101,000 | PUR | Indiana | West Lafayette | |
| Steven T. Olney Herbarium | Brown University | 100,000 | BRU | Rhode Island | Providence | |
| Friesner Herbarium | Butler University | 100,000 | BUT | Indiana | Indianapolis | |
| Pennsylvania State University Herbarium | | 107,000 | PAC | Pennsylvania | University Park | |
| Sul Ross State University Herbarium | | 100,000 | SRSC | Texas | Alpine | |
| California State University Herbarium | California State University, Chico | 98,000 | CHSC | California | Chico | |
| State University of New York Herbarium | SUNY College of Environmental Science and Forestry | 95,500 | SYRF | New York | Syracuse | |
| American Type Culture Collection Culture Collection | | 92,000 | ATCC | Virginia | Manassas | |
| Marie Selby Botanical Gardens Herbarium | | 92,000 | SEL | Florida | Sarasota | |
| Montana State University Herbarium | | 85,000 | MONT | Montana | Bozeman | |
| Pacific Union College Herbarium | | 85,000 | PUA | California | Angwin | |
| Colorado State University Herbarium | | 80,000 | CS | Colorado | Fort Collins | |
| National Center for Agricultural Utilization Research, USDA/ARS ARS Culture Collection | | 80,000 | NRRL | Illinois | Peoria | |
| Deaver Herbarium | Northern Arizona University | 80,000 | ASC | Arizona | Flagstaff | |
| Stephen F. Austin State University Herbarium | | 78,000 | ASTC | Texas | Nacogdoches | |
| Stover-Ebinger Herbarium | Eastern Illinois University | 77,000 | EIU | Illinois | Charleston | |
| Tom S. and Miwako K. Cooperrider Herbarium | Kent State University | 76,000 | KE | Ohio | Kent | |
| Longwood University Herbarium | | 75,000 | FARM | Virginia | Farmville | |
| Kriebel Herbarium | Purdue University | 75,000 | PUL | Indiana | West Lafayette | |
| Emporia State University Herbarium | | 70,000 | KSTC | Kansas | Emporia | |
| New Mexico State University Herbarium | | 70,000 | NMC | New Mexico | Las Cruces | |
| Wesley Niles Herbarium | College of Southern Nevada | 70,000 | UNLV | Nevada | Henderson | |
| Muhlenberg College Herbarium | | 65,000 | MCA | Pennsylvania | Allentown | |
| John D. Freeman Herbarium | Auburn University | 64,000 | AUA | Alabama | Auburn | |
| Desert Botanical Garden Herbarium | Desert Botanical Garden | 66,000 | DES | Arizona | Phoenix | |
| Ozarks Regional Herbarium | Missouri State University | 62,181 | SMS | Missouri | Springfield | |
| Robert F. Hoover Herbarium | California Polytechnic State University | 62,000 | OBI | California | San Luis Obispo | |
| Baylor University Herbarium | Baylor University | 61,000 | BAYLU | Texas | Waco | |
| Chadron State College Herbarium | | 60,789 | CSCN | Nebraska | Chadron | |
| Clemson University Herbarium | | 60,000 | CLEMS | South Carolina | Clemson | |
| Cleveland Museum of Natural History Herbarium | | 60,000 | CLM | Ohio | Cleveland | |
| Ted R. Bradley Herbarium | George Mason University | 60,000 | GMUF | Virginia | Fairfax | |
| Illinois State University Herbarium | | 60,000 | ISU | Illinois | Normal | |
| Ramsey-Freer Herbarium | University of Lynchburg | 60,000 | LYN | Virginia | Lynchburg | |
| Ray J. Davis Herbarium | Idaho State University | 60,000 | IDS | Idaho | Pocatello | |
| Rochester Academy of Science Herbarium | | 60,000 | ROCH | New York | Rochester | |
| Smith College Herbarium | | 60,000 | SCHN | Massachusetts | Northampton | |
| Billington Herbarium | Cranbrook Institute of Science | 57,905 | BLH | Michigan | Bloomfield Hills | |
| Theodore M. Sperry Herbarium | Pittsburg State University | 65,500 | KSP | Kansas | Pittsburg | |
| San Juan College Herbarium | | 55,000 | SJNM | New Mexico | Farmington | |
| University of Kentucky Herbarium | | 50,000 | KY | Kentucky | Lexington | |
| Desert Botanical Garden Herbarium | | 54,000 | DES | Arizona | Phoenix | |
| Marshall University Herbarium | | 50,000 | MUHW | West Virginia | Huntington | |
| National Tropical Botanical Garden Herbarium | | 50,000 | PTBG | Hawaii | Kalaheo, Kauai | |
| Towson University Herbarium | | 50,000 | BALT | Maryland | Towson | |
| Clark University Herbarium | | 47,000 | CUW | Massachusetts | Worcester | |
| Ohio University Herbarium | | 46,000 | BHO | Ohio | Athens | |
| Angelo State University Herbarium | | 45,000 | SAT | Texas | San Angelo | |
| Central Wyoming College Herbarium | | 45,000 | CWC | Wyoming | Riverton | |
| Fay A. MacFadden Herbarium | California State University, Fullerton | 43,310 | MACF | California | Fullerton | |
| Kathryn Kalmbach Herbarium | Denver Botanic Gardens | 42,000 | KHD | Colorado | Denver | |
| Mecklenburg County Park and Recreation Herbarium | | 42,000 | UNCC | North Carolina | Charlotte | |
| Mississippi State University Herbarium | | 40,500 | MISSA | Mississippi | Mississippi State | |
| Murray State University Herbarium | | 40,500 | MUR | Kentucky | Murray | |
| Forest Products Laboratory Herbarium | | 40,000 | CFMR | Wisconsin | Madison | |
| Howard Payne University Herbarium | | 40,000 | HPC | Texas | Brownwood | |
| Robert A. Vines Environmental Science Center Herbarium | | 40,000 | SBSC | Texas | Houston | |
| Harold M. Tucker Herbarium | | 39,000 | CIC | Idaho | Caldwell | |
| California State University Herbarium | California State University, Los Angeles | 37,000 | CSLA | California | Los Angeles | |
| Fort Hays State University Herbarium | | 36,000 | FHKSC | Kansas | Hays | |
| California Department of Food and Agriculture Herbarium | | 35,000 | CDA | California | Sacramento | |
| California State University Herbarium | California State University, Fresno | 35,000 | FSC | California | Fresno | |
| Walter B. McDougall Herbarium | Museum of Northern Arizona | 35,000 | MNA | Arizona | Flagstaff | |
| Northern Kentucky University Herbarium | | 35,000 | KNK | Kentucky | Highland Heights | |
| South Dakota State University Herbarium | | 35,000 | SDC | South Dakota | Brookings | |
| Jacksonville State University Herbarium | | 31,265 | JSU | Alabama | Jacksonville | |
| Julian H. Miller Mycological Herbarium | Georgia Museum of Natural History University of Georgia | 30,000 | GAM | Georgia | Athens | |
| Black Hills State University Herbarium | | 30,000 | BHSC | South Dakota | Spearfish | |
| Boise State University Herbarium | | 30,000 | SRP | Idaho | Boise | |
| Chicago Academy of Sciences Herbarium | | 30,000 | CACS | Illinois | Chicago | |
| Morris Arboretum Herbarium | University of Pennsylvania | 30,000 | MOAR | Pennsylvania | Philadelphia | |
| Nicholls State University Herbarium | | 30,000 | THIB | Louisiana | Thibodaux | |
| Southwest Texas State University Herbarium | | 30,000 | SWT | Texas | San Marcos | |
| University of Tennessee at Chattanooga Herbarium | | 30,000 | UCHT | Tennessee | Chattanooga | |
| Nevada State Museum Herbarium | | 28,500 | NSMC | Nevada | Carson City | |
| Old Dominion University Herbarium | | 28,000 | ODU | Virginia | Norfolk | |
| Smithsonian Institution Herbarium | | 28,000 | USNC | District of Columbia | Washington | |
| St. Cloud State University Herbarium | | 28,000 | SCL | Minnesota | St. Cloud | |
| St. John's University/College of Saint Benedict Herbarium | | 28,000 | CSB | Minnesota | Collegeville | |
| CSU Center for Environmental Management of Military Lands Herbarium | | 35,000 | CMML | Colorado | Fort Collins | |
| Naples Botanical Garden Herbarium | | 27,000 | SWF | Florida | Naples | |
| Southern Illinois University Hepatic Herbarium | | 27,000 | ABSH | Illinois | Carbondale | |
| Central Michigan University Herbarium | | 26,000 | CMC | Michigan | Mount Pleasant | |
| Denison University Herbarium | | 26,000 | DEN | Ohio | Granville | |
| Morehead State University Herbarium | | 26,000 | MDKY | Kentucky | Morehead | |
| Tennessee Technological University Herbarium | | 25,000 | HTTU | Tennessee | Cookeville | |
| Arkansas State University Herbarium | | 25,000 | STAR | Arkansas | State University | |
| Central Washington University Herbarium | | 25,000 | ELRG | Washington | Ellensburg | |
| Charleston Museum Herbarium | | 25,000 | CHARL | South Carolina | Charleston | |
| Connecticut Agricultural Experiment Station Herbarium | | 25,000 | NHES | Connecticut | New Haven | |
| Eastern Michigan University Herbarium | | 25,000 | EMC | Michigan | Ypsilanti | |
| Knox College Herbarium | | 25,000 | KNOX | Illinois | Galesburg | |
| Bernard Lowy Mycological Herbarium | Louisiana State University | 25,000 | LSUM | Louisiana | Baton Rouge | |
| Massachusetts College of Liberal Arts Herbarium | | 25,000 | NASC | Massachusetts | North Adams | |
| Range Science Herbarium | New Mexico State University | 25,000 | NMCR | New Mexico | Las Cruces | |
| North Coast Herbarium of California | Sonoma State University | 25,000 | NCC | California | Rohnert Park | |
| Staten Island Institute of Arts and Sciences Herbarium | | 25,000 | SIM | New York | Staten Island | |
| Grinnell College Herbarium | | 24,000 | GRI | Iowa | Grinnell | |
| Muskingum University Herbarium | | 23,000 | MUS | Ohio | New Concord | |
| Pennsylvania Department of Agriculture Herbarium | | 23,000 | PAM | Pennsylvania | Harrisburg | |
| Middle Tennessee State University Herbarium | | 23,000 | MTSU | Tennessee | Murfreesboro | |
| Colorado College Herbarium | | 22,500 | COCO | Colorado | Colorado Springs | |
| North Museum of Natural History and Science Herbarium | | 22,380 | FMC | Pennsylvania | Lancaster | |
| Northern Illinois University Herbarium | | 22,000 | DEK | Illinois | DeKalb | |
| Denver Botanic Gardens Mycology Laboratory and Herbarium | | 21,000 | DBG | Colorado | Denver | |
| Wayne E. Manning Herbarium | Bucknell University | 20,000 | BUPL | Pennsylvania | Lewisburg | |
| William Darlington Herbarium | West Chester University | 20,000 | DWC | Pennsylvania | West Chester | |
| California State University Herbarium | California State University, Northridge | 20,000 | SFV | California | Northridge | |
| Carleton College Herbarium | | 20,000 | CARL | Minnesota | Northfield | |
| Fairmont State University Herbarium | | 20,000 | FWVA | West Virginia | Fairmont | |
| Furman University Herbarium | | 20,000 | FUGR | South Carolina | Greenville | |
| Georgia Southern University Herbarium | | 20,000 | GAS | Georgia | Statesboro | |
| Hoysradt Herbarium | Hartwick College | 20,000 | HHH | New York | Oneonta | |
| Lord Fairfax Community College Herbarium | | 20,000 | LFCC | Virginia | Middletown | |
| D. T. MacRoberts Herbarium | Louisiana State University | 20,000 | LSUS | Louisiana | Shreveport | |
| Northwestern State University Herbarium | | 20,000 | NATC | Louisiana | Natchitoches | |
| South Plains College Herbarium | | 20,000 | SPLT | Texas | Levelland | |
| Luman Andrews Herbarium | Springfield Science Museum | 19,000 | SPR | Massachusetts | Springfield | |
| University of Memphis Herbarium | University of Memphis | 19,000 | MEM | Tennessee | Memphis | |
| Emory University Herbarium | | 18,805 | GEO | Georgia | Atlanta | |
| Arkansas Tech University Herbarium | | 18,000 | APCR | Arkansas | Russellville | |
| Steven Pearl Lathrop Herbarium | Beloit College | 18,000 | BELC | Wisconsin | Beloit | |
| Fort Lewis College Herbarium | | 17,200 | FLD | Colorado | Durango | |
| Ball State University Herbarium | | 17,000 | BSUH | Indiana | Muncie | |
| East Tennessee State University Herbarium | | 17,000 | ETSU | Tennessee | Johnson City | |
| Missouri Southern State University Herbarium | | 17,000 | MCJ | Missouri | Joplin | |
| Newberry College Herbarium | | 16,500 | NBYC | South Carolina | Newberry | |
| St. Martin's College Herbarium | | 16,500 | OSMC | Washington | Lacey | |
| Mississippi Museum of Natural Science Herbarium | | 16,480 | MMNS | Mississippi | Jackson | |
| Idaho Herbarium | Brigham Young University | 16,000 | RICK | Idaho | Rexburg | |
| Billings Herbarium | Montana State University | 16,000 | MSUB | Montana | Billings | |
| Northeastern University Herbarium | | 16,000 | HNUB | Massachusetts | Boston | |
| Jason Swallen Herbarium | Ohio Wesleyan University | 16,000 | OWU | Ohio | Delaware | |
| S. R. Warner Herbarium | Sam Houston State University | 16,000 | SHST | Texas | Huntsville | |
| Slippery Rock University Herbarium | | 16,000 | SLRO | Pennsylvania | Slippery Rock | |
| Monroe County Department of Parks Herbarium | | 15,720 | HPH | New York | Rochester | |
| Henderson State University Herbarium | | 15,500 | HEND | Arkansas | Arkadelphia | |
| Alma College Herbarium | | 15,000 | ALMA | Michigan | Alma | |
| George R. Cooley Herbarium | Colgate University | 15,000 | GRCH | New York | Hamilton | |
| Delta Institute of Natural History Herbarium | | 15,000 | DINH | Maine | Bowdoin | |
| Earlham College Herbarium | | 15,000 | EAR | Indiana | Richmond | |
| Fairbanks Museum and Planetarium Herbarium | | 15,000 | SJFM | Vermont | St. Johnsbury | |
| Gulf Coast Research Laboratory Herbarium | | 15,000 | HGCRL | Mississippi | Ocean Springs | |
| James Madison University Herbarium | | 15,000 | JMUH | Virginia | Harrisonburg | |
| Keene State College Herbarium | | 15,000 | KESC | New Hampshire | Keene | |
| Occidental College Herbarium | | 15,000 | LOC | California | Los Angeles | |
| Parasitic Seed Plants Herbarium | | 15,000 | PSP | West Virginia | Burlington | |
| Potato Introduction Station Herbarium | | 15,000 | PTIS | Wisconsin | Sturgeon Bay | |
| San Diego State University Herbarium | | 15,000 | SDSU | California | San Diego | |
| Carl Sharsmith Herbarium | San Jose State University | 15,000 | SJSU | California | San Jose | |
| Toney Keeney Herbarium | Southwest Texas Junior College | 14,372 | UVST | Texas | Uvalde | |
| Bowling Green State University Herbarium | | 14,000 | BGSU | Ohio | Bowling Green | |
| Southeast Missouri State University Herbarium | | 14,000 | SEMO | Missouri | Cape Girardeau | |
| Southern Oregon University Herbarium | | 14,000 | SOC | Oregon | Ashland | |
| California State University Herbarium | California State University, Sacramento | 13,000 | SACT | California | Sacramento | |
| Carthage College Herbarium | | 13,000 | CART | Wisconsin | Kenosha | |
| Georgia Southwestern State University Herbarium | | 13,000 | GSW | Georgia | Americus | |
| Randolph College Herbarium | | 13,000 | RMWC | Virginia | Lynchburg | |
| Rocky Mountain Research Station Herbarium | | 13,000 | MRC | Montana | Missoula | |
| Charles B. Graves Herbarium | Connecticut College | 12,500 | CCNL | Connecticut | New London | |
| Andrews University Herbarium | | 12,000 | AUB | Michigan | Berrien Springs | |
| California State University Herbarium | California State University, Long Beach | 12,000 | LOB | California | Long Beach | |
| Delta State University Herbarium | | 12,000 | DSC | Mississippi | Cleveland | |
| Huntington University Herbarium | Huntington University | 12,000 | HUNT | Indiana | Huntington | |
| Rocky Mountain Research Station Forest Pathology Herbarium | USDA Forest Service | 12,000 | FPF | Colorado | Fort Collins | |
| Southeastern Louisiana University Herbarium | | 12,000 | SELU | Louisiana | Hammond | |
| Central Missouri State University Herbarium | | 11,854 | WARM | Missouri | Warrensburg | |
| Michigan Technological University Herbarium | | 11,710 | MCTC | Michigan | Houghton | |
| Lyndon State College Herbarium | | 11,500 | LSC | Vermont | Lyndonville | |
| Planting Fields Arboretum State Historic Park Herbarium | | 11,500 | OBPF | New York | Oyster Bay | |
| Saint Bonaventure University Herbarium | | 11,083 | SBU | New York | St. Bonaventure | |
| Forest Service, USDA Herbarium | | 11,000 | FSSR | Georgia | Atlanta | |
| Nancy Poole Rich Herbarium | Chicago Botanic Garden | 10,500 | CHIC | Illinois | Glencoe | |
| Western Oklahoma Herbarium | Southwestern Oklahoma State University | 10,500 | WOH | Oklahoma | Weatherford | |
| Stetson University Herbarium | | 10,500 | DLF | Florida | DeLand | |
| Adams State College Herbarium | | 10,000 | ALAM | Colorado | Alamosa | |
| Albion College Herbarium | | 10,000 | ALBC | Michigan | Albion | |
| Stuart K. Harris Herbarium | Boston University | 10,000 | BSN | Massachusetts | Boston | |
| Columbus State University Herbarium | | 10,000 | COLG | Georgia | Columbus | |
| Indiana State University Herbarium | | 10,000 | TER | Indiana | Terre Haute | |
| Arthur G. Shields Herbarium | Indiana University of Pennsylvania | 10,000 | IUP | Pennsylvania | Indiana | |
| Hells Canyon Herbarium | Lewis–Clark State College | 10,000 | HCH | Idaho | Lewiston | |
| Moorhead State University Herbarium | | 10,000 | MRD | Minnesota | Moorhead | |
| Navajo Nation Herbarium | Navajo Nation/Northern Arizona University | 10,000 | NAVA | Arizona | Window Rock | |
| North Carolina A & T State University Herbarium | | 10,000 | NCATG | North Carolina | Greensboro | |
| Northwest Missouri State University Herbarium | Northwest Missouri State University | 10,000 | NMSU | Missouri | Maryville | |
| Norwich University Herbarium | Norwich University | 10,000 | NUV | Vermont | Northfield | |
| Our Lady of the Lake University Herbarium | Our Lady of the Lake University | 10,000 | LLC | Texas | San Antonio | |
| Pacific Southwest Research Station Herbarium | USDA Forest Service | 10,000 | IFGP | California | Placerville | |
| Putnam Museum of History and Natural Science Herbarium | | 10,000 | BDI | Iowa | Davenport | |
| Reading Public Museum Herbarium | | 10,000 | RPM | Pennsylvania | Reading | |
| Roger Williams Park Herbarium | | 10,000 | RWPM | Rhode Island | Providence | |
| Heraly MacDonald Herbarium | St. Norbert College | 10,000 | SNC | Wisconsin | De Pere | |
| Shasta College Herbarium | | 10,000 | RESC | California | Redding | |
| State University of New York Herbarium | Binghamton University | 10,000 | BING | New York | Binghamton | |
| Rocky Mountain Research Station Herbarium | USDA Forest Service | 9,500 | ASUF | Arizona | Flagstaff | |
| Botanical Research Center Herbarium | | 9,000 | BRCH | Texas | Bryan | |
| College of the Ozarks Herbarium | | 9,000 | SOTO | Missouri | Point Lookout | |
| Gilbert M. Smith Herbarium | Hopkins Marine Station, Stanford University | 9,000 | GMS | California | Pacific Grove | |
| Huntington Botanical Gardens Herbarium | | 9,000 | HNT | California | San Marino | |
| Marine Biological Laboratory Herbarium | | 9,000 | SPWH | Massachusetts | Woods Hole | |
| Rhodes College Herbarium | | 9,000 | SWMT | Tennessee | Memphis | |
| Sewanee Herbarium | Sewanee: The University of the South | 9,000 | UOS | Tennessee | Sewanee | |
| St. Andrews University Herbarium | | 9,000 | SAPCL | North Carolina | Laurinburg | |
| State University of New York College at Cortland Herbarium | | 9,000 | CORT | New York | Cortland | |
| Rocky Mountain Research Station Herbarium | | 8,807 | BOIS | Idaho | Boise | |
| South Florida Collections Management Center Herbarium | Everglades National Park | 8,600 | FNPS | Florida | Homestead | |
| Dayton Museum of Natural History Herbarium | | 8,500 | DMNH | Ohio | Dayton | |
| Adrian College Herbarium | | 8,150 | ADR | Michigan | Adrian | |
| Dakota Wesleyan University Herbarium | | 8,000 | DWU | South Dakota | Mitchell | |
| Division of State Parks Herbarium | | 8,000 | MODNR | Missouri | Jefferson City | |
| Eastern Oregon University Herbarium | | 8,000 | EOSC | Oregon | La Grande | |
| Florida Department of Agriculture and Consumer Services Herbarium | | 8,000 | PIHG | Florida | Gainesville | |
| Grand Canyon National Park Museum Collection Herbarium | | 8,000 | GCNP | Arizona | Grand Canyon | |
| Longwood Gardens Herbarium | | 8,000 | KEN | Pennsylvania | Kennett Square | |
| Pacific Grove Museum of Natural History Herbarium | | 8,000 | PGM | California | Pacific Grove | |
| Peabody Essex Museum Herbarium | | 8,000 | PM | Massachusetts | Salem | |
| Nevada Operations Office Herbarium | U.S. Department of Energy | 7,787 | NTS | Nevada | Las Vegas | |
| Great Smoky Mountains National Park Herbarium | | 7,700 | GSMNP | Tennessee | Gatlinburg | |
| Converse University Herbarium | | 7,500 | CONV | South Carolina | Spartanburg | |
| Florida Southern College Herbarium | | 7,500 | FSCL | Florida | Lakeland | |
| Hope College Herbarium | | 7,500 | HCHM | Michigan | Holland | |
| Howard University Herbarium | | 7,500 | HUDC | District of Columbia | Washington | |
| Orange County Department of Agriculture Herbarium | | 7,400 | ANA | California | Anaheim | |
| Orville Bissett Herbarium | Central Connecticut State University | 7,380 | CCSU | Connecticut | New Britain | |
| National Park Service Herbarium | | 7,200 | YM | California | Yosemite National Park | |
| Kellogg Biological Station Herbarium | Michigan State University | 7,079 | KBSMS | Michigan | Hickory Corners | |
| Uinta Herbarium | Bureau of Land Management | 7,000 | UI | Utah | Vernal | |
| Jesup Herbarium | Dartmouth College | 7,000 | HNH | New Hampshire | Hanover | |
| Gesneriad Gardens Herbarium | | 7,000 | GGB | Colorado | Longmont | |
| Nantucket Maria Mitchell Association Herbarium | | 7,000 | NMMA | Massachusetts | Nantucket | |
| Rocky Mountain Research Station Herbarium | | 7,000 | SSLP | Utah | Provo | |
| Cameron University Herbarium | | 6,675 | CAMU | Oklahoma | Lawton | |
| Oscar Scherer State Park Herbarium | | 6,621 | FLSP | Florida | Osprey | |
| Archbold Biological Station Herbarium | | 6,500 | ARCH | Florida | Lake Placid | |
| California State University Herbarium | California State University, East Bay | 6,500 | HAY | California | Hayward | |
| Harbor Branch Oceanographic Institute Herbarium | | 6,500 | HBFH | Florida | Fort Pierce | |
| Radford University Herbarium | | 6,500 | RUHV | Virginia | Radford | |
| Francis Marion University Herbarium | | 6,300 | FMUH | South Carolina | Florence | |
| Michael Wirth Herbarium | New England College | 6,210 | NHNE | New Hampshire | Henniker | |
| Charles O. Wingo, Jr. Herbarium | Salisbury University | 6,200 | SUHC | Maryland | Salisbury | |
| Southern Forest Range Program Herbarium | Southern Research Station | 6,200 | SFRP | Louisiana | Pineville | |
| Baylor University Herbarium | | 6,000 | SRCG | Texas | Gruver | |
| Bureau of Land Management Herbarium | | 6,000 | BLMLK | Oregon | Lakeview | |
| Chaffey College Herbarium | | 6,000 | CHAF | California | Alta Loma | |
| Elmira College Herbarium | | 6,000 | ECH | New York | Elmira | |
| Iowa Lakeside Laboratory Herbarium | | 6,000 | ILH | Iowa | Milford | |
| Leo Galloway Herbarium | Missouri Western State University | 6,000 | MWSJ | Missouri | St. Joseph | |
| Northern Michigan University Herbarium | | 6,000 | NM | Michigan | Marquette | |
| Northern Prairie Research Center Herbarium | | 6,000 | NPWRC | North Dakota | Jamestown | |
| State University of New York at Oneonta Herbarium | | 6,000 | SUCO | New York | Oneonta | |
| Snow College Herbarium | | 5,990 | EPHR | Utah | Ephraim | |
| Colorado Mesa University Herbarium | | 5,700 | MESA | Colorado | Grand Junction | |
| James C. Parks Herbarium | Millersville University | 22,877 | MVSC | Pennsylvania | Millersville | |
| Oral Roberts University Herbarium | | 5,700 | ORU | Oklahoma | Tulsa | |
| Rob & Bessie Welder Wildlife Foundation Herbarium | | 5,600 | WWF | Texas | Sinton | |
| Aquinas College Herbarium | | 5,500 | AQC | Michigan | Grand Rapids | |
| Lincoln Memorial University Herbarium | | 5,500 | LNCN | Tennessee | Harrogate | |
| Hardin–Simmons University Herbarium | | 5,500 | HSU | Texas | Abilene | |
| Marvin A. Bichel Herbarium | Nebraska Wesleyan University | 5,500 | HNWU | Nebraska | Lincoln | |
| Joe M. Anderson Herbarium | Northeastern State University | 5,170 | NOSU | Oklahoma | Tahlequah | |
| Davis and Elkins College Herbarium | | 5,120 | DEWV | West Virginia | Elkins | |
| Birmingham Botanical Gardens Herbarium | | 5,100 | BBG | Alabama | Birmingham | |
| Pacific Southwest Forest and Range Experiment Station Forest Disease Herbarium | | 5,100 | PFRS | California | Berkeley | |
| Augustana University Herbarium | | 5,000 | AUG | South Dakota | Sioux Falls | |
| College of the Atlantic Herbarium | College of the Atlantic and Acadia National Park | 13,000 | HCOA | Maine | Bar Harbor | |
| College of the Redwoods, Mendocino Coast Campus Herbarium | | 5,000 | CRMC | California | Fort Bragg | |
| Crater Lake National Park Herbarium | | 5,000 | CRLA | Oregon | Crater Lake | |
| East Central University Herbarium | | 5,000 | ECSC | Oklahoma | Ada | |
| University of Tennessee at Martin | | 5,000 | UTM | Tennessee | Martin | |
| Flathead Valley Community College Herbarium | | 5,000 | FVCC | Montana | Kalispell | |
| Hendrix College Herbarium | | 5,000 | HXC | Arkansas | Conway | |
| High Point University Herbarium | | 5,000 | HPU | North Carolina | High Point | |
| Indiana University Southeast Herbarium | | 5,000 | JEF | Indiana | New Albany | |
| Lamar University Herbarium | | 5,000 | LAMU | Texas | Beaumont | |
| Los Angeles Valley College Herbarium | | 5,000 | VNC | California | Van Nuys | |
| McNeese State University Herbarium | | 5,000 | MCN | Louisiana | Lake Charles | |
| Shorter University Herbarium | | 5,000 | SHOR | Georgia | Rome | |
| Bridger-Teton National Forest Herbarium | | 4,935 | BTJW | Wyoming | Jackson | |
| New England Wild Flower Society Herbarium | | 4,500 | BEDF | Massachusetts | Framingham | |
| Santa Clara University Herbarium | | 4,500 | SACL | California | Santa Clara | |
| Bridgewater College Herbarium | | 4,293 | BDWR | Virginia | Bridgewater | |
| California State University Stanislaus Herbarium | | 4,000 | SHTC | California | Turlock | |
| Clinch Valley College, University of Virginia Herbarium | | 4,000 | CVCW | Virginia | Wise | |
| College of Eastern Utah Herbarium | | 4,000 | PRI | Utah | Price | |
| University of Mary Washington Herbarium | | 4,000 | MWCF | Virginia | Fredericksburg | |
| Darlene and William Radichel Herbarium | Minnesota State University, Mankato | 4,000 | MANK | Minnesota | Mankato | |
| Swarthmore College Herbarium | | 4,000 | SWC | Pennsylvania | Swarthmore | |
| Northwestern Oklahoma State University Herbarium | | 3,800 | NWOSU | Oklahoma | Alva | |
| Salem International University Herbarium | | 3,600 | SAWV | West Virginia | Salem | |
| Roanoke College Herbarium | | 3,544 | SARC | Virginia | Salem | |
| Friday Harbor Laboratories Herbarium | University of Washington | 3,500 | FHL | Washington | Friday Harbor | |
| Grand Valley State University Herbarium | | 3,500 | GVSC | Michigan | Allendale | |
| Middlebury College Herbarium | Middlebury College | 3,500 | MID | Vermont | Middlebury | |
| State University of New York Herbarium | SUNY Geneseo | 3,500 | GESU | New York | Geneseo | |
| Colby College Herbarium | | 3,300 | WAVI | Maine | Waterville | |
| Manti-La Sal National Forest Herbarium | | 3,200 | MALS | Utah | Price | |
| Oakland Museum of California Herbarium | | 3,200 | OAKL | California | Oakland | |
| San Diego Mesa College Herbarium | | 3,200 | SDM | California | San Diego | |
| Death Valley National Park Herbarium | | 3,148 | DEVA | California | Death Valley | |
| Rowe-Love Herbarium | Lane Community College | 3,100 | LCEU | Oregon | Eugene | |
| Agnes Scott College Herbarium | | 3,000 | DECA | Georgia | Decatur | |
| La Sierra University Herbarium | | 3,000 | LOMA | California | Riverside | |
| Lassen Volcanic National Park Herbarium | | 3,000 | LVNP | California | Mineral | |
| Newark Museum Herbarium | | 3,000 | NEMU | New Jersey | Newark | |
| Seattle Pacific University Herbarium | | 3,000 | SPC | Washington | Seattle | |
| Ash Mountain Herbarium | Sequoia and Kings Canyon National Parks | 3,000 | THRI | California | Three Rivers | |
| Santa Barbara City College Herbarium | | 2,900 | SBCC | California | Santa Barbara | |
| Pasadena City College Herbarium | | 2,700 | PASA | California | Pasadena | |
| Saint Mary's College Herbarium | | 2,650 | WINO | Minnesota | Winona | |
| Mississippi University for Women Herbarium | | 2,600 | MSCW | Mississippi | Columbus | |
| Grand Rapids Junior College Herbarium | | 2,537 | GRJC | Michigan | Grand Rapids | |
| California State Polytechnic University Herbarium | | 2,500 | CSPU | California | Pomona | |
| Eastern Mennonite University Herbarium | | 2,500 | HAVI | Virginia | Harrisonburg | |
| Emory and Henry University Herbarium | | 2,500 | EHCV | Virginia | Emory | |
| Florida Atlantic University Herbarium | | 2,500 | FAU | Florida | Davie | |
| Fox Research Forest Herbarium | | 2,500 | SPH | New Hampshire | Hillsborough | |
| Mills College Herbarium | | 2,500 | OMC | California | Oakland | |
| Oregon State University Herbarium | | 2,500 | OSUF | Oregon | Corvallis | |
| Palomar College Herbarium | | 2,500 | PASM | California | San Marcos | |
| Isle Royale National Park Herbarium | | 2,200 | IRP | Michigan | Houghton | |
| Anza-Borrego Desert State Park Herbarium | | 2,000 | BSCA | California | Borrego Springs | |
| Pierce College Herbarium | | 2,000 | LAPC | California | Woodland Hills | |
| Rutgers University Herbarium | | 2,000 | NCAS | New Jersey | Newark | |
| Saint Meinrad College of Liberal Arts Herbarium | | 2,000 | SMH | Indiana | Saint Meinrad | |
| Diablo Valley College Herbarium | | 1,908 | DVM | California | Pleasant Hill | |
| State University of New York Herbarium | SUNY Brockport | 1,670 | BROC | New York | Brockport | |
| San Joaquin County Herbarium | | 1,650 | SSJC | California | Stockton | |
| Everhart Museum Herbarium | | 1,534 | EVMU | Pennsylvania | Scranton | |
| Gordon College Herbarium | | 1,502 | WMGC | Massachusetts | Wenham | |
| Winnemucca District Herbarium | Bureau of Land Management | 1,500 | WDNE | Nevada | Winnemucca | |
| Cornell College Herbarium | | 1,500 | MOVC | Iowa | Mount Vernon | |
| Hobart and William Smith Colleges Herbarium | | 1,500 | DH | New York | Geneva | |
| Klamath National Forest Herbarium | | 1,500 | KNFY | California | Yreka | |
| University of Olivet Herbarium | | 1,500 | OLV | Michigan | Olivet | |
| Salem College Herbarium | | 1,500 | SC | North Carolina | Winston-Salem | |
| Point Reyes National Seashore Herbarium | | 1,405 | PORE | California | Point Reyes Station | |
| Mote Marine Laboratory Herbarium | | 1,369 | MOT | Florida | Sarasota | |
| Benedictine College Herbarium | | 1,350 | HWBA | Kansas | Atchison | |
| Nevada Division of Agriculture Herbarium | | 1,327 | NSDA | Nevada | Reno | |
| Rocky Mountain Forest and Range Experiment Station Herbarium | | 1,222 | ALBU | New Mexico | Albuquerque | |
| Kansas Wesleyan University Herbarium | | 1,100 | SAL | Kansas | Salina | |
| Florida Marine Research Institute Herbarium | | 1,000 | STPE | Florida | St. Petersburg | |
| Luther College Herbarium | | 1,000 | LCDI | Iowa | Decorah | |
| Saint Michael's College Herbarium | | 1,000 | SMCW | Vermont | Winooski | |
| Southern Research Station Herbarium | | 1,000 | CHAS | South Carolina | Charleston | |
| Fishlake National Forest Herbarium | | 850 | FNFR | Utah | Richfield | |
| Golden West College Herbarium | | 600 | HUBE | California | Huntington Beach | |
| Muskegon Community College Herbarium | | 600 | MUSK | Michigan | Muskegon | |
| Houghton Lake Wildlife Research Station Herbarium | | 500 | HL | Michigan | Houghton Lake Heights | |
| Long Island University Herbarium | | 500 | SOUT | New York | Southampton | |
| Simpson College Herbarium | | 500 | SICH | Iowa | Indianola | |
| Mohr Herbarium | Alabama Museum of Natural History | 0 | ALU | Alabama | Tuscaloosa | |
| Amherst College Herbarium | | 0 | AC | Massachusetts | Amherst | |
| Arnold Arboretum Herbarium | Harvard University | 0 | AAH | Massachusetts | Jamaica Plain | |
| Arnold Arboretum Herbarium | Harvard University | 0 | A | Massachusetts | Cambridge | |
| Austin High School Herbarium | | 0 | AHS | Texas | Austin | |
| Biology Department Herbarium | Texas A&M University | 0 | TAMU | Texas | College Station | |
| Dudley Herbarium | California Academy of Sciences | 0 | DS | California | San Francisco | |
| California Department of Fish and Wildlife Herbarium | | 0 | TIC | California | Terminal Island | |
| Gilbert L. Stout Plant Disease Herbarium | California Department of Food and Agriculture | 0 | BPS | California | Sacramento | |
| Carnegie Institution of Washington Herbarium | | 0 | CI | California | Stanford | |
| Catholic University of America Herbarium | | 0 | LCU | District of Columbia | Washington | |
| Charterhouse School Museum Herbarium | | 0 | GOD | California | Berkeley | |
| Citrus College Herbarium | | 0 | AZUS | California | Glendora | |
| Colorado State Museum Herbarium | | 0 | COLOM | Colorado | Denver | |
| Crispus Attucks High School Herbarium | | 0 | CAHS | Indiana | Indianapolis | |
| Cusino Wildlife Research Station Herbarium | | 0 | CUS | Michigan | Shingleton | |
| Douglass College Herbarium | Rutgers University | 0 | RUT | New Jersey | New Brunswick | |
| Duke University Moss Herbarium | | 0 | ABSM | North Carolina | Durham | |
| East High School Herbarium | | 0 | SLC | Utah | Salt Lake City | |
| Eastern Nevada Landscape Coalition | | 2,150 | ENLC | Nevada | Ely | |
| Field Museum of Natural History | | 0 | FMNH | Illinois | Chicago | |
| Forest Products Laboratory Herbarium | | 0 | BFDL | Wisconsin | Madison | |
| Forest Service Herbarium | US Department of Agriculture | 0 | POFS | Oregon | Portland | |
| Economic Herbarium of Oakes Ames | Harvard University | 0 | ECON | Massachusetts | Cambridge | |
| Farlow Reference Library and Herbarium of Cryptogamic Botany | Harvard University | 0 | FH | Massachusetts | Cambridge | |
| Orchid Herbarium of Oakes Ames | Harvard University | 0 | AMES | Massachusetts | Cambridge | |
| Houston Museum of Natural Science Herbarium | | 0 | HPM | Texas | Houston | |
| I.W. Carpenter Jr. Herbarium | Appalachian State University | 0 | BOON | North Carolina | Boone | |
| Kansas State University Herbarium | | 0 | KSC | Kansas | Manhattan | |
| Lloyd Library and Museum Herbarium | | 0 | LLO | Ohio | Cincinnati | |
| Marylhurst College Herbarium | | 0 | MARO | Oregon | Marylhurst | |
| Michigan Technological University Herbarium | | 0 | MCT | Michigan | Houghton | |
| Michigan Technological University Herbarium | | 0 | MCTF | Michigan | L'Anse | |
| Natural History Museum of Los Angeles County Herbarium | | 0 | LAM | California | Los Angeles | |
| New England Botanical Club Herbarium | | 0 | NEBC | Massachusetts | Cambridge | |
| Oberlin College Herbarium | | 0 | OC | Ohio | Oberlin | |
| Ochoco National Forest Herbarium | | 0 | OCNF | Oregon | Prineville | |
| Otero Junior College Herbarium | | 0 | LAJC | Colorado | La Junta | |
| Pacific Marine Station Herbarium | | 0 | PMS | California | Dillon Beach | |
| Pacific Northwest Forest and Range Experiment Station Herbarium | | 0 | LAGO | Oregon | La Grande | |
| Pfeiffer University Herbarium | | 0 | PFC | North Carolina | Misenheimer | |
| Pomona College Herbarium | | 0 | POM | California | Claremont | |
| Portland State University Herbarium | | 29,000 | HPSU | Oregon | Portland | |
| Prairie View A&M University Herbarium | | 0 | TPV | Texas | Prairie View | |
| Rappahannock Community College Herbarium | | 0 | GLEN | Virginia | Glenns | |
| Rocky Mountain Forest and Range Experiment Station Forest Service Herbarium | | 0 | USFS | Colorado | Fort Collins | |
| Rutgers Mycological Collection | | 40000 | RUTPP | New Jersey | New Brunswick | |
| Saint Vincent College Herbarium | | 0 | LAT | Pennsylvania | Latrobe | |
| Santa Barbara Museum of Natural History Herbarium | | 0 | SBM | California | Santa Barbara | |
| Sonoma State University Herbarium | | 0 | ROPA | California | Rohnert Park | |
| Southern Utah University | | 0 | SUU | Utah | Cedar City | |