BONAP's References

To provide insight into the source materials used to develop BONAP’s various databases, we have divided our reference section into multiple categories including Journals and Periodicals, Natural Heritage Programs, and Additional Reference Sources.  In total, we have applied over 150,000 individual references towards our nearly 5,000,000 state and county-level occurrences.

During the course of this protracted study, BONAP has analyzed  critically over 1,200,000 voucher specimens to document the occurrences of state (or equivalent) and county-level records.  However, this number pales in comparison with the vast number of vouchered specimens analyzed and documented by others who have shared their voucher records with BONAP in order to substantiate the occurences of the approximately 5,000,000 county-level records.  Although the great majority of these vouchers are housed within the documentation section, several hundred thousands vouchers reside in personal collections or other small but valuable collections.

Floristic Literature Documentation 

Journals and Periodicals: This section lists titles of journals and periodicals of botanical literature used for assessing the phytogeography, taxonomy and nomenclature of vascular plants found within the geographic area of “North America” (including all U.S. States, all Canadian Provinces, the French holdings of St. Pierre and Miquelon, the Island of Greenland, and the Islands of Puerto Rico, Navassa and the U.S. Virgin Islands in the Caribbean). Rather than listing all 150,000 references, in our internal databse, we have linked the title and year of each specific journal/periodical with each individual taxon and each phytogeographic record; thus permitting all state and county-level phytogeographic occurrences to be linked back to their original reference sources. Although for this website we do not show the documentation of individual county-occurence data, we do show the state or equivalent documentation. The county-level documentation will be presented within our soon-to-be-released Floristic Synthesis.

Additional Reference Sources: Within this section, we list the more voluminous monographic, revisionary and floristic references used in producing our plant distribution maps. Although the vast majority of these references are formally published, some of the Ph.D. dissertations, Master’s theses, and minor floras or florulas remain unpublished, while others are still in preparation but are used and cited here with permission from the authors. Similar to the methodology used within the Journals and Periodicals section, the scientific name of each taxon is linked to a specific state or equivalent geographic area.

Specimen Voucher Documentation: The following herbaria, museums, special collections and other repositories of vascular plants have been visited, consulted, or have provided valuable county-level records for our National Plant Atlas.

Natural Heritage Programs: For nearly four decades, BONAP has worked closely with various conservation groups across North America; however, none has provided as much insight, shared as much data, or offered as much assistance to BONAP as The Nature Conservancy (TNC), NatureServe and the various State Heritage Programs. Two key individuals deserve enormous credit for assisting BONAP; Dr. Robert E. Jenkins, former Vice President of TNC and chief architect of The Heritage Program Network, and Dr. Larry E. Morse, former Chif Botanist of TNC and former North American Botanist of NatureServe. BONAP owes special thanks to both of these individuals for their wisdom, insight and dedication in promoting conservation biology over the past forty years.

The State Heritage Programs have also provided invaluable information and insights into issues of conservation and rarity, and have served our states and provinces well by protecting rare organisms and sensitive habitats. Virtually all of the rarity fields and concepts found within our plant distribution maps are based largely on definitions and concepts promoted and used by the Heritage Network. Therefore, we have dedicated this special reference section to them for all they have accomplished and for the help they have provided BONAP in building our databases.  

Journals and Periodicals

ASB Bulletin

Acta Botanica Fennica

Agricultural Extension Station Bulletin, Cornell University

Aliso

Allertonia

American Fern Journal

American Journal of Botany

American Journal of Science

American Midland Naturalist

American Orchid Society Bulletin

Annales Botanici Fennici

Annals of the Carnegie Museum

Annals of the Kentucky Society of Natural History

Annals of the Missouri Botanical Garden

Aquatic Botany 

Aquatic Exotics News(Northeast Sea Grant Network, Connecticut Sea Grant, Groton, CT.)

Aquilegia; newsletter, Colorado Native Plant Society

Aquilo. Series Botanica

Arkiv För Botanik

Asa Gray Bulletin

Australian Journal of Botany

Baileya

Bartonia

Biochemical Systematics and Ecology

Bishop Museum Occasional Papers

Blue Jay

Blumea

Borealis:  The Newsletter of the Alaska Native Plant Society

Botanica Helvetica

Botanical Electronic News.  Published on the Internet at:  http://www.ou.edu/cas/botany-micro/ben/

Botanical Gazette

Botanical Museum Leaflets [Harvard University]

Botanical Review

Botanische Jahrbucher fur Systematik, Pflanzengeshichte und Pflanzengeographie

Botaniska Notiser

Boyce Thompson Institute for Plant Research

Bradleya

Brewer, R., ed. 1983. Proceedings of the Eighth North American Prairie Conference. Western Michigan Univ., Kalamazoo.

Brigham Young University Science Bulletin

Brittonia

Bulletin de la Societe Botanique de France

Bulletin of Tall Timbers Research Station

Bulletin of the American Rhododendron Society 

Bulletin of the Georgia Academy of Science

Bulletin of the Native Plant Society of Oregon

Bulletin of the New York State Museum

Bulletin of the Torrey Botanical Club

Canadian Field-Naturalist

Canadian Journal of Botany

Canadian Journal of Genetics and Cytology

Candollea

Canotia

Carnivorous Plant Newsletter

Castanea

Castilleja

Catholic University of America Biological Series 

Claytonia:  Newsletter of the Arkansas Native Plant Society

Contributions from the Arnold Arboretum of Harvard University

Contributions from the Dudley Herbarium of Standford University

Contributions from the Gray Herbarium

Contributions from the Herbarium of Franklin and Marshall College

Contributions from the United States National Herbarium

Contributions from the University of Michigan Herbarium

Contributions in Science, Natural History Museum of Los Angeles County

Contributions of the New York Botanical Garden

Crossosoma

Cytologia

Dansk Botanisk Arkiv

Dansk Botanisk Tidskrift

Darwiniana

Desert Plants

Diversity and Distributions

Douglasia

Ecology

Economic Botany

Edinburgh Journal of Botany

El Paso Southwest Botanical Miscellany

Erigenia

Evolution

Evolutionary Monographs

Fedde's Repertorium

Federal Register

Fiddlehead Forum

Field and Laboratory

Fieldiana Botany

Flora Neotropica

Florida Scientist

Four Seasons

Garden and Forest

Gentes Herbarum

Georgia Botanical Society Newsletter

Great Basin Naturalist

Great Basin Naturalist Memoirs

Gulf Research Reports

Handbook Laubholz

Harvard Papers in Botany

Haseltonia

Herbertia

Huntia

Illinois Biological Monographs

Illinois Natural History Survey 

Indiana Academy of Science

Iowa Bird Life

Iowa State College Journal of Science

Iowa State Journal of Research

Iowa State Journal of Science

Israel Journal of Botany

Japanese Journal of Botany

Jeffersonia

Journal of Geobotany

Journal of Heredity

Journal of Kentucky Academy of Science

Journal of Range Management

Journal of the Alabama Academy of Science

Journal of the Arizona-Nevada Academy of Science

Journal of the Arkansas Academy of Science

Journal of the Arnold Arboretum

Journal of the Botanical Research Institute of Texas

Journal of the Elisha Mitchell Scientific Society

Journal of the Iowa Academy of Science

Journal of the Linnean Society.  Botany

Journal of the Minnesota Academy of Science

Journal of the North Carolina Academy of Science

Journal of the Tennessee Academy of Science

Kalmia

Kansas State Journal of Science

Kew Bulletin

Leaflets of Botanical Observation and Criticism

Leaflets of Western Botany

Lindleyana

Lloydia

Ludoviciana

Lundellia

Maine Naturalist

Meddelelser Om Gronland, Bioscience 

Memoirs of the American Academy of Arts and Sciences

Memoirs of the New York Botanical Garden

Memoirs of the Torrey Botanical Club

Mennema, J. 1989. A Taxonomic Revision of Lamium (Lamiaceae). Leiden Bot. Series, Leiden, and E.J. Brill, New York.

Michigan Botanist

Milwaukee Public Museum Contributions in Biology and Geology

Minnesota Plant Press

Minnesota Studies in Plant Science

Missouriensis

Muhlenbergia

Natural Areas Journal

Natural Diversity

Naturaliste Canadien

Nevada Native Plant Society Newsletter

New Hampshire Agricultural Extension Station Research Bulletin

New Mexico Botanist

New Mexico Naturalist's Notes

Nordic Journal of Botany

Norske Vidensk Selsk. Skrifter

North American Flora [New York Botanical Garden]

North American Native Orchid Journal

Northwest Science

Novon

Nytt Magasin for Naturvidenskapene 

Ohio Biological Survey Bulletin Series

Ohio Journal of Science

Opera Botanica

Orchidea

Oregon Flora Newsletter

Ottawa Naturalist

Pacific Science

Papers of the Michigan Academy of Sciences, Arts, and Letters

Phanerogamarum Monographique Tomias

Phoradendron

Phytologia

Phytologia Memoirs

Phyton

Phytoneuron. Published on the Internet at http://www.phytoneuron.net/

Phytotaxa

Pittonia

Plant Life

Plant Press; field botany in Ontario

Plant Systematics and Evolution

Preslia

Proceedings of the Academy of Natural Sciences of Philadelphia

Proceedings of the American Academy of Arts and Sciences

Proceedings of the Arkansas Academy of Science

Proceedings of the Biological Society of Washington

Proceedings of the California Academy of Sciences

Proceedings of the Florida State Horticultural Society

Proceedings of the Indiana Academy of Science

Proceedings of the Iowa Academy of Science

Proceedings of the Louisiana Academy of Sciences

Proceedings of the Minnesota Academy of Science

Proceedings of the Oklahoma Academy of Science

Proceedings of the Rochester Academy of Science

Proceedings of the Utah Academy of Sciences, Arts and Letters

Pteridologia

Publications of the Israel Academy of Sciences and Humanities

Publications of the Museum, Michigan State University. Biological Series

Rangelands

Repertorium Specierum Novarum

Research Studies of the State College of Washington

Rhodora

Rocky Mountain Research Station, US Forest Service. Invasive Species Science Updates

Sego Lily: Newsletter of the Utah Native Plant Society

Selbyana

Sida

Sida Botanical Miscellany

Smithsonian Contributions to Botany

Southeastern Naturalist

Southern California Botanists Special Publication

Southwestern Naturalist

Stantec Botanical Notes

State University of Iowa Studies in Natural History

Succulenta

Svensk Botanisk Tidskrift

Systematic Botany

Systematic Botany Monographs

Taxon

Technical Publications of the State Biological Survey of Kansas

Tennessee Anthropologist

Thaiszia - Journal of Botany. 

The Academy of Natural Sciences.  Philadelphia

The Biology of Canadian Weeds

The Journal of the Torrey Botanical Society

The Maryland Naturalist

The Texas Journal of Science

Tipularia

Torreya

Transaction of the Iowa State Horticultural Society

Transactions of the Illinois State Academy of Science

Transactions of the Kansas Academy of Science

Transactions of the Missouri Academy of Science

Transactions of the Nebraska Academy of Sciences

Transactions of the Wisconsin Academy of Sciences, Arts, and Letters

University of California Publications in Botany

University of Colorado Studies

University of Kansas Science Bulletin

University of Washington Publications in Biology

University of Waterloo Biology Series

University of Wyoming Agricultural Experiment Station Publicationsand Research Reports

USDA Division of Agrostology Bulletin

Virginia Journal of Science

Virginia Natural Heritage E-News.  Available on the Internet at: http://www.dcr.virginia.gov/natural_heritage/nhenews.shtml 

Vulpia

Washington Journal of Science

Wasmann Journal of Biology

Watsonia

Webbia

Weed Science

Weed Technology

Werdenda

Western North American Naturalist

Wildland Weeds

Willdenowia

Wrightia

Additional Reference Sources

Aaseng, N. 2003. Minnesota Department of Natural Resources Database (Welby Smith contributor). Unpublished manuscript.

Abrams, L. 1940-1960. An Illustrated Flora of the Pacific States, 4 Vols. Stanford Univ. Press, Stanford.

Acevedo-Rodriguez, P. et al. 1996. Flora of St. John, US Virgin Islands. Mem. New York Bot. Gard., Vol. 78. Bronx.

Acevedo-Rodríguez, P. and M.T. Strong. 2007. Catalogue of the seed plants of the West Indies Website. Available on the Internet at: http://botany.si.edu/antilles/WestIndies/query.cfm (accessed 2009)

Acevedo-Rodríguez, P. and M.T. Strong. 2007. Catalogue of the seed plants of the West Indies Website. Available on the Internet at: http://botany.si.edu/antilles/westindies/ (accessed 2009)

Acevedo-Rodíiguez, P. 2005. Monocotyledons and Gymnosperms of Puerto Rico and the Virgin Islands. Contrib. U.S. Natl. Herbarium, Vol. 51. National Museum of Natural History, Washington.

Acevedo-Rodíiguez, P. 2005. Vines and Climbing Plants of Puerto Rico and the Virgin Islands. Contrib. U.S. Natl. Herbarium, Vol. 51. National Museum of Natural History, Washington.

Ackerman, J.D. 1995. An Orchid Flora of Puerto Rico and the Virgin Islands. Mem. New York Bot. Gard., Vol. 73. Bronx.

Agee, J.K. and C.R. Wasem. 1987. Stetattle Creek Research Natural Area. Supplement No. 25 to Federal Research Natural Areas in Oregon and Washington: A Guidebook for Scientists and Educators.

Agricultural Research Service, USDA.

Ahlenslager, K. and P. Miller. 1999. Establishment Record for Halliday Fen Research Natural Area within the Colville National Forest. Pend Oreille County, Washington.

Aiken, S.G. and S.J. Darbyshire. 1990. The Fescue Grasses of Canada. Agric. Canada, Canadian Govt. Publ. Centre [distributor], 1844E. Ottawa.

Aiken, S.G., M.J. Dallwitz, C.L. McJannet and L.L. Consaul. 1996 . Festuca of North America: descriptions, illustrations, identification, and information retrieval.  Published on the Internet at: http://delta-intkey.com/festuca/

Albee, B.J., L.M. Shultz, and S. Goodrich. 1988. Atlas of the Vascular Plants of Utah. Utah Museum of Natural History, Salt Lake City.

Alford, M.H. 1999. The vascular flora of Amite County, Mississippi. Master's Thesis, Duke Univ., Durham.

Alien Ferns in Hawaii. The Natural History Museum of Los Angeles County Foundation.  Available on the Internet at: http://www.nhm.org/research/botany/wilsonferns/home.html

Allen, C.M. 1984. A Preliminary Checklist of the Vascular Flora of Allen Parish. Contrib. Herbarium of Northeastern Louisiana, No. 5. Monroe.

Allen, C.M. 2004. Checklist of the Vascular Flora of Louisiana. Unpublished manuscript.

Allred, K.W. 1993. A Field Guide to the Grasses of New Mexico. Dept. of Agric. Communications, New Mexico State Univ., Las Cruces.

Allred, K.W. 2002. A Working Index to New Mexico Vascular Plant Names. Available on the Internet at: http://web.nmsu.edu/~kallred/herbweb/newpage5.htm

Allred, K.W. 2008. Flora Neomexicana I:  The Vascular Plants of New Mexico. New Mexico State Univ., Las Cruces.

Allred, K.W., S.L. Hatch, and R. Soreng. 1986. Verified Checklist of the Grasses of New Mexico. Agric. Expt. Sta. Res. Report No. 579. New Mexico State Univ., Las Cruces.

Anderson, E.F. 2001. The Cactus Family. Timber Press,  Portland.

Anderson, K. 1983. A Check List of the Plants of New Jersey. Rancocas Nature Center, Mount Holly.

Angelo, R. and D.E. Boufford. 2001 - 2011. Atlas of the Flora of New England. Available on the Internet at: http://neatlas.org/

Anonymous. 1971. Bureau of Land Management Report. Checklist on file at UC Davis Herbarium. Unpublished manuscript.

Anonymous. 1977. Survey of Sensitive Plants of the Algodones Dunes. Westec Services Inc., Tustin, CA. (For Bureau of Land Management, Riverside.). Unpublished manuscript.

Anonymous. 1979. From Dames & Moore BioInvestigations; compiled into Nipomo Dunes handbook by Bill Denneen (1982); revised by G.F. Hrusa (1977-1987). Unpublished manuscript.

Anonymous. 1988. List of Plants on Vina Plains Preserve. Vina Plains Preserve Handbook, revised 1987. Unpublished manuscript. 

Anonymous. 1994. Plant Species List, Cosumnes River Preserve. Unpublished manuscript.

Antonio, T.M. and S. Masi. 2001. The Sunflower Family in the Upper Midwest. Indiana Academy of Science, Indianapolis.

Argus, G.W. 1973. The Genus Salix in Alaska and the Yukon. Natl. Museum of Canada, Ottawa.

Argus, G.W. 1985. Computerized Catalogue of Herbarium Specimens of Salix in the Southeastern United States. Natl. Museum of Canada, Ottawa.

Argus, G.W. and D.J. White. 1978. The Rare Vascular Plants of Alberta. Natl. Museum of Natural Sciences, Syllogeus 17. Ottawa.

Arizona Rare Plant Committee. 1999. Arizona Rare Plant Field Guide. 

Arkansas Vascular Flora Committee.  2006.  Checklist of the Vascular Plants of Arkansas.  University of Arkansas, Fayettville.

Arrieta, Y.H., P.M. Peterson and M. de la Cerda Lemus. 2004. Revisión de Bouteloua Lag. (Poaceae). CIIDIR Unidad Durango, Durango, Mexico.

Atkinson, S. and F. Sharpe. 1985. Wild Plants of the San Juan Islands. The Mountaineers, Seattle.

Atkinson, S. and F. Sharpe. 1993. Wild Plants of the San Juan Islands, Second ed. The Mountaineers/The San Juan Preservation Trust, Seattle.

Atwood, J.T., W.D. Countryman, R.A. Jervis, D.H. Miller, F.C. Seymour, and M.L. Smith. 1973. Check List of Vermont Plants. Vermont Botanical and Bird Club.

Bahadur, K.N. 1988. Monograph on the Genus Toona (Meliaceae). M/s Bishen Singh Mahendra Pal Singh.  Shiva Offset Press, Dehra Dun.

Baker, J.G. 1888. Handbook of the Amaryllideae. London.

Baker, M.S. 1954. A Partial List of Seed Plants of the North Coast Ranges of California by the North Coast Herbarium.  Herb. of the Santa Rosa Junior College, Santa Rosa.

Baldwin, G.B., D.H. Goldman, D.J. Keil, R. Patterson, T.J. Rosatti and D.H. Wilden, eds. 2012. The Jepson Manual: Vascular Plants of California, 2nd ed. Univ. of California Press, Berkeley.

Ball, P.W. and D.J. White. 1982. Carex rotundata. In: Atlas of the Rare Vascular Plants of Ontario, part 1, eds. G.W. Argus and D.J. White. Natl. Museum of Natural Sciences, Ottawa.

Ballard, H.E., Jr. 1992. Systematics of Viola, Section Viola in North America, North of Mexico. Ph.D. Dissertation, Univ. of Michigan, Ann Arbor.

Barger, T.W. and D. Tenaglia. 2007. The Vascular Flora of the Coon Creek Forever Wild Tract, Tallapoosa County, Alabama. Unpublished manuscript.

Barker, L. M. 1976. A Vascular Plant Inventory and Vegetation Map of the Lanphere-Christensen Dunes.  The Nature Conservancy. On file at UC Davis Herbarium. Unpublished manuscript.

Barkley, T.M. 1968. A Manual of the Flowering Plants of Kansas. Kansas State Univ. Endowment Assoc., Manhattan.

Bassett, I.J. 1973. The Plantains of Canada. Res. Branch, Agric. Canada, Monogr. No. 7. Ottawa.

Bassett, I.J., C.W. Crompton, J. McNeill, and P.M. Taschereau. 1983. The genus Atriplex (Chenopodiaceae) in Canada. Communication Branch, Agric. Canada, Monogr. No. 31. Ottawa.

Beach Vitex Task Force. Available on the Internet at: http://www.beachvitex.org

Beal, W.J. 1904. Michigan Flora, A List of the Ferns and Seed Plants Growing Without Cultivation. State Board of Agric., Lansing.

Beatley, J.C. 1976. Vascular Plants of the Nevada Test Site and Central-Southern Nevada. Tech. Info. Center, Office of Tech. Info. Energy Res. and Development Administration.

Beauchamp, R.M. 1986. A Flora of San Diego County, California. Sweetwater River Press, National City.

Beckmann, R.E., Jr. 1976. A Biosystematic Investigation of the Genus Hydrophyllum L. (Hydrophyllaceae). Ph.D. Dissertation, Univ. of Tennessee, Nashville.

Beetle, A.A. and M. May. 1971. Grasses of Wyoming. Univ. of Wyoming Agric. Expt. Sta. Bull. Res. Journal, No. 39. Laramie.

Belliston, N., R. Whitesides, S. Dewey, J. Merritt, s. Burningham. 2009. Noxious Weed Field Guide for Utah, 3rd. ed.  Utah State University Extension Service. Available on the Internet at: http://www.utahweed.org/PDF/FieldGuide_Ed3.pdf

Benson, L. 1982. The Cacti of the United States and Canada. Stanford Univ. Press, Stanford.

Benson, L. and R.A. Darrow. 1981. The Trees and Shrubs of the Southwestern Deserts, Third ed. Univ. of Arizona Press, Tucson.

Best, C., J.T. Howell, W. Knight, I. Knight, and M. Wells. 1996. A Flora of Sonoma County. California Native Plant Society, Sacramento.

Biek, D. 1998. The Flora of Mount Rainier National Park, Washington. Published on the Internet at:  http://www.wolfenet.com/~biek/

Billington, C. 1952. Ferns of Michigan. Cranbrook Inst. of Science, Bull. No. 32. Bloomfield Hills.

Bingham, R.T. 1987. Plants of the Seven Devils Mountains of Idaho-an Annotated Checklist. U.S. Dept. Agric. General Tech. Report INT-219.

Black Hills State University Herbarium. 2011-2012. A Collaborative Database of the Plants from Western South Dakota and Eastern Wyoming Including the Bear Lodge Mountains and Black Hills. Available on the Internet at: http://herbarium.bhsu.edu/database.htm

Blomquist, H.L. 1948. The Grasses of North Carolina. Duke Univ. Press, Durham.

Boivin, B. 1966.  Enumeration des Plantes du Canada.  Provancheria,  No. 6.  Memoires de l'Herbier Louis-Marie.  Univ. Laval, Quebec.

Boivin, B. 1967-1981. Flora of the Prairie Provinces. Provancheria, Nos. 2, 3 and 12. Memoires de l'Herbier Louis-Marie. Univ. Laval, Quebec.

Boivin, B. 1992. Les Cyperacees de l'est du Canada. Provancheria No. 25. Memoires de l'Herbier Louis-Marie.  Univ. Laval, Quebec.

Bonner, W.P., R.D. Estes, J.A. Gordon, and P.W. Bettoli. 1985. Report on the Unusual Massive Decline in Aquatic Plants in Woods Resevoir, Tennessee.

Booth, W.E. 1972. Grasses of Montana. Privately published by the author.

Booth, W.E. and J.C. Wright. 1950-1966. Flora of Montana. Montana State Univ., Bozeman.

Bouchard, A., D. Barabe, M. Dumais, and S. Hay. 1983. The Rare Vascular Plants of Quebec. Natl. Museums of Canada, Syllogeus No. 48. Ottawa.

Bouchard, A., S. Hay, L. Brouillet, M. Jean, and I. Saucier. 1991. The Rare Vascular Plants of the Island of Newfoundland. Canadian Museum of Nature, Syllogeus No. 65. Ottawa.

Boufford, D., S. Kelley and R. Ree. 2010. Fieldnotes: Specimen Information System.  Available on the Internet at: http://rheum.huh.harvard.edu:8080/allspecimens

Boufford, D.E. The Vascular Flora of Cheshire County, New Hampshire. Unpublished manuscript.

Braun, E.L. 1943. An Annotated Catalog of Spermatophytes of Kentucky. Univ. of Cincinnati, Cincinnati.

Braun, E.L. 1961. The Woody Plants of Ohio. Ohio State Univ. Press, Columbus.

Braun, E.L. 1967. The Monocotyledoneae of Ohio. Ohio State Univ. Press, Columbus.

Brayshaw, T.C. 1989. Buttercups, Waterlilies, and their Relatives in British Columbia. Royal British Columbia Museum, Victoria.

Brayshaw, T.C. 2000. Pondweeds, Bur-reeds, and their Relatives in British Columbia, Second ed. Royal British Columbia Museum, Victoria.

Britton, N.L., and A. Brown. 1913. An Illustrated Flora of the Northern United States, Canada and the British Possessions. 3 Vols. Charles Scribner's Sons, New York.

Brouillet, L., F. Coursol, and M. Favreau. 2006. VASCAN. The database of Canadian vascular plants. Herbier Marie-Victorin, Institut de recherche en biologie végétale, Université de Montréal.

Brouillet, L., F. Coursol, M. Favreau, M. Anions, P. Bélisle & P. Desmet. 2010 VASCAN, the Database of Vascular Plants of Canada. Available on the Internet at: http://data.canadensys.net/vascan/

Brown, E.T. and R. Athey. 1992. Vascular Plants of Kentucky: An Annotated Checklist. Univ. Press of Kentucky, Lexington.

Brown, L.E. 2009. A Checklist of the Vascular Plants of the Houston Area. Unpublished manuscript.

Brown, M.L. and R.G. Brown. 1984. Herbaceous Plants of Maryland. Port City Press, Inc., Baltimore.

Brown, P.M. 1993. Field and Study Guide to the Orchids of New England. Published privately by the author.

Brown, P.M. 1997. Wild Orchids of the Northeastern United States. Comstock Publishing Associates, Ithaca.

Brown, P.M. 2002. Wild Orchids of Florida. Univ. Press of Florida, Gainesville.

Brown, R.G. and M.L. Brown. 1972. Woody Plants of Maryland. Port City Press, Inc., Baltimore.

Bruederle, L.P. 1987. Systematics of the Carex crinita Lam. complex excluding C. crinita var. minor, C. leonura and C. porteri. Ph.D. Dissertation, Rutgers Univ., New Brunswick.

Buckingham, N.M., E.G. Schreiner, T.N. Kaye, J.E. Burger, and E.L. Tisch. 1995. Flora of the Olympic Peninsula. Northwest Interpretive Association and the Washington Native Plant Society, Seattle.

Buegge, J.J. Flora of the Santa Teresa Mountains in Graham County, Arizona.  Available on the Internet at: http://lifesciences.asu.edu/herbarium/st_teresa_weblist.html

Butterworth, G. and A. Chadwick. 1995. Checklist of Plants, Carrizo Plain Natural Area, revised (1997-2000). Unpublished manuscript.

CalFlora: Information on California plants for education, research and conservation. [web application]. 2000-2010. Berkeley, California: The CalFlora Database [a non-profit organization]. Available: http://www.calflora.org/.

California Native Plant Society (CNPS). 2003 - 2011. Inventory of Rare and Endangered Plants (online edition, v7-10b). California Native Plant Society. Sacramento, CA.  Available on the Internet at: http://www.cnps.org/inventory

Campbell, C.S. et al. 1995. Checklist of the Vascular Plants of Maine, Third Rev. Bull. of the Josselyn Bot. Society, No. 13. Orono.

Campbell, J and M. Medley. 2006. Illustrated Atlas of Vascular Plants in Kentucky: a First Approximation. Plus Update 2008. Unpublished manuscript.

Campbell, J. 2008. Kentucky Atlas. Unpublished manuscript.

Canne-Hilliker, J.M. 1987. Status Report on Skinner's Purple False Foxglove Agalinis skinneriana (Wood) Britton, an endangered species in Canada. Unpublished manuscript.

Carex Working Group. 1993. Preliminary Atlas of Carex Distribution in Oregon. Unpublished manuscript.

Carr, B.  2005. Travis County Flora Project.  Available on the Internet at:  http://www.npsot.org/Austin/TravisCountyFlora/default.html

Carter, J.L. 1960. The Flora of Northwestern Iowa. Ph.D. Dissertation, State Univ. of Iowa, Iowa City. (observation and vouchered)

Carter, J.R. 1978. A Floristic Study of the Delta National Forest and Adjacent Areas. MS Thesis. Mississippi State Univ., State College.

Case, F.W., Jr. 1987. Orchids of the Western Great Lakes Region, Rev. ed. Cranbrook Inst. of Science, Bull. 48. Bloomfield Hills.

Casper, S. J. 1966. Monographie der Gattung Pinguicula L. Bibliotheca botanica; Heft 127/128, Stuttgart.

Catling, P.M., D.S. Erskine, and R.B. MacLaren. 1985. The Plants of Prince Edward Island with New Records, Nomenclatural Changes, and Corrections and Deletions. Res. Branch, Agric. Canada, Publ. 1798.

Chafin, L.G. 2007. Field Guide to the Rare Plants of Georgia. State Botanical Garden of Georgia and The Georgia Plant Conservation Alliance, Athens.

Chambers, K.L. and S. Sundberg. 1998. Oregon Vascular Plant Checklist: Asteraceae. Oregon Flora Project, Oregon State Univ., Corvallis.

Chapman, A.W. 1883. Flora of the Southern United States. Second ed. Ivison, Blakeman, Taylor, and Co.,  New York.

Chaudhri, M.N. 1968. A Revision of the Paronychiinae. Drukkerij H. Gianotten N.V., Tilburg.

Checklist of the Vascular Plants of San Diego County, California. San Diego Natural History Museum.  Available on the Internet at: http://www.sdnhm.org/research/botany/sdplants/index.html

Chester, E.W., B.E. Wofford, R. Kral, H.R. DeSelm, and A.M. Evans. 1993. Atlas of Tennessee Vascular Plants. Vol. 1. Misc. Publ. No. 9. Center for Field Biology, Austin Peay State Univ., Clarksville.

Chester, E.W., B.E. Wofford, and R. Kral. 1997. Atlas of Tennessee Vascular Plants. Vol. 2. Misc. Publ. No. 13. Center for Field Biology, Austin Peay State Univ., Clarksville.

Chiang-Cabrera, F. 1981. Taxonomic Study of the North America Species of Lycium (Solonaceae). Ph.D. Dissertation, Univ. of Texas, Austin.

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Specimen Voucher Documentation

Academy of Natural Sciences (Philadelphia, PA)
Acadia National Park (Bar Harbor, ME)
Acadia University (Wolfville, Nova Scotia, Canada)
Accokeek Foundation Herbarium, Piscataway Park (Accokeek, MD)
Ada Hayden Herbarium, Iowa State University (Ames, IA)
Agriculture and Agri-Food Canada (Charlottetown, Prince Edward Island, Canada)
Agriculture and Agri-Food Canada (Saskatoon, Saskatchewan, Canada)
Agriculture and Agri-Food Canada (Swift Current, Saskatchewan, Canada)
Alaska Region, USDA Forest Service (Sitka, AK)
Albertson College (Caldwell, ID)
Albion R. Hodgdon Herbarium, University of New Hampshire (Durham, NH)
Alison Cusick collections housed at University of North Carolina (Chapel Hill, NC)
Amherst College (Amherst, MA)
Andrew Charles Moore Herbarium, University of South Carolina (Columbia, SC)
Angelo State University (San Angelo, TX)
Anne Arundel Community College (Arnold, MD)
Anniston Museum of Natural History (Anniston, AL)
Arches National Park (Moab, UT)
Arizona State University (Tempe, AZ)
Arkansas Natural Heritage Commission
Arkansas State University (Jonesboro, AR)
Arkansas Tech University (Russellville, AR)
Arnold Arboretum, Harvard University (Cambridge, MA)
Asbury College (Wilmore, KY)
Austin Peay State University (Clarksville, TN)
Australian National Botanic Gardens (Canberra, Australia)
Bard College (Annandale-on-Hudson, NY)
Baylor University (Waco, TX)
Berea College (Berea, KY)
Bighorn National Forest (Sheridan, WY)
Biltmore Herbarium, housed at North Carolina State University (Raleigh, NC)
Birmingham Botanical Garden (Birmingham, AL)
Bodega Marine Laboratory, University of California Davis Affiliation (Davis, CA)
Botanical Garden and Museum (Oslo, Norway)
Botanical Museum (Lund, Sweden)
Botanical Research Institute of Texas (Fort Worth, TX)
Botanischer Garten und Botanisches Museum Berlin-Dahlem, Zentraleinrichtung der Freien Universitat Berlin (Berlin, Germany)
Botanisches Institut und Botanischer der Universität Bonn (Bonn, Germany)
Brigham Young University (Provo, UT)
British Columbia Conservation Data Centre computer databases (Victoria, British Columbia, Canada)
British Museum, The Natural History Museum (London, U.K.)
Brooklyn Botanic Garden (Brooklyn, NY)
Brown University (Providence, RI)
Bryce Canyon National Park (Bryce, UT)
Bucknell University (Lewisburg, PA)
Butler University (Indianapolis, IN)
C.E. Bessey Herbarium, University of Nebraska State Museum (Lincoln, NE)
C.L. Lundell Herbarium, University of Texas (Austin, TX)
California Academy of Sciences (San Francisco, CA)
California Department of Food and Agriculture (Sacramento, CA)
California State University (Chico, CA)
California State University (Fresno, CA)
California State University (Northridge, CA)
Campbellsville College (Campbellsville, KY)
Canadian Forest Service (Ottawa, Ontario, Canada)
Canadian Museum of Nature (Ottawa, Ontario, Canada)
Canisius College (Buffalo, NY)
Canyonlands National Park (Moab, UT)
Cape Cod Museum Natural-History
Capitol Reef National Park (Torrey, UT)
Carl Sharsmith Herbarium, San Jose State University (San Jose, CA)
Carnegie Museum of Natural History (Pittsburgh, PA)
Catholic University of America (Washington, DC)
Cedar Breaks National Monument (Cedar Breaks, UT)
Central Missouri State University (Warrensburg, MO)
Central Washington University (Ellensburg, WA)
Central Wyoming College (Riverton, WY)
Centre College of Kentucky (Danville, KY)
Chadron State College (Chadron, NE)
Chicago Botanic Garden (Gelncoe, IL)
Chrysler Herbarium, Rutgers University (New Brunswick, NJ)
Clark University (Worcester, MA)
Claude E. Phillips Herbarium, Delaware State College (Dover, DE)
Clemson University (Clemson, SC)
Cleveland Museum of Natural History (Cleveland, OH)
Clinton Herbarium, Buffalo Museum of Science (Buffalo, NY)
Coe College (Cedar Rapids, IA)
College of Environmental Sciences and Forestry, State University of New York (Syracuse, NY)
College of the Agriculture, University of Kentucky (Lexington, KY)
College of the Ozarks (Point Lookout, MO)
Colorado College (Colorado Springs, CO)
Colorado State University (Fort Collins, CO)
Connecticut Botanical Society, Yale University (New Haven, CT)
Connecticut College (New London, CT)
Cornell University (Ithaca, NY)
Cove Point Natural Heritage Trust (Lusby, MD)
Cove Point Natural Heritage Trust Herbarium (Prince Frederick, MD)
Cranberry Lake Biological Station (Syracuse, NY)
Crater Lake National Park Herbarium (Crater Lake, OR)
Creso Herbarium, Pacific Lutheran University (Tacoma, WA)
Davies Herbarium, University of Louisville (Louisville, KY)
Davis and Elkins College (Elkins, WV)
Deaver Herbarium, Northern Arizona University (Flagstaff, AZ)
Delaware Natural Heritage Program (Smyrna, DE)
Delta Institute of Natural History (Bowdoin, ME)
Delta State University (Cleveland, MS)
Denali National Park (Denali, AK)
Diatom Herbarium, Academy of Natural Sciences (Philadelphia, PA)
Dinosaur National Monument (Dinosaur, CO)
Disney Wilderness Preserve/The Nature Conservancy (Kissimmee, FL)
Douglas County Museum (Roseburg, OR)
Drury College (Springfield, MO)
Dudley Herbarium, California Academy of Sciences (San Francisco, CA)
Duke University (Durham, NC)
Dunn-Palmer Herbarium, University of Missouri (Columbia, MO)
E.L. Reed Herbarium, Texas Tech University (Lubbock, TX)
East Herbarium, National Capital Parks (Washington, DC)
Eastern Illinois University (Charleston, IL)
Eastern Kentucky University (Richmond, KY)
Eastern New Mexico University (Portales, NM)
Eastern Oregon University (La Grande, OR)
Economic Herbarium of Oakes Ames, Harvard University (Cambridge, MA)
Eglin Air Force Base (Okaloosa County, FL)
Emory University (Atlanta, GA)
Emporia State University (Emporia, KS)
Evergreen State College (Olympia, WA)
Fairbanks Museum and Planetarium (Saint Johnsbury, VT)
Fairchild Tropical Garden (Miami, FL)
Fan Memorial Institute of Biology (Beijing, China)
Fessenden Herbarium, Cylburn Arboretum (Baltimore, MD)
Field Museum of Natural History (Chicago, IL)
Florida Atlantic University (Boca Raton, FL)
Florida State University (Tallahassee, FL)
Forest Pathology Herbarium, Rocky Mountain Research Station, USDA Forst Service (Fort Collins, CO)
Forest Service Herbarium, Juneau Forestry Sciences Laboratory (Juneau, AK)
Forest Service Herbarium, Rocky Mountain Forest and Range Experiment Station (Fort Collins, CO)
Forest Service Region4, USDA Forest Service (Ogden, UT)
Forest Service, Southern Forest Experiment Station (Pineville, LA)
Fort Polk Herbarium (Fort Polk, LA)
Fort Worth Museum of Science and History (Fort Worth, TX)
Fossil Butte National Monument (Kemmerer, WY)
Friesner Herbarium, Butler University (Indianapolis, IN)
Frostburg State University (Frostburg, MD)
Furman University (Greenville, SC)
Garrett Herbarium, University of Utah (Salt Lake City, UT)
George Mason University (Fairfax, VA)
George R. Clooney Herbarium, Colgate University (Hamilton, NY)
Georgetown College (Georgetown, KY)
Grand Teton National Park (Moose, WY)
Gray Herbarium, Harvard University (Cambridge, MA)
Great Lakes Forestry Centre, Canadian Forest Service (Sault Sainte Marie, Ontario, Canada)
H.J. Andrews Experimental Forest (Corvallis, OR)
Harold L. Lyon Arboretum (Honolulu, HI)
Hastings Natural History Reservation (Carmel Valley, CA)
Henderson State University (Arkadelphia, AR)
Hendrix College (Conway, AR)
Herbarium Pacificum, Bishop Museum (Honolulu, HI)
Herbier du Québec, Complexe scientifique (Sainte-Foy, Quebec, Cananda)
Herbier Rolland-Germain, Universite de Sherbrooke (Sherbrooke, Quebec, Canada)
Houghton College (Houghton, NY)
Howard Payne University (Brownwood, TX)
Hoysradt Herbarium, Hartwick College (Oneonta, NY)
Humboldt State University (Arcata, CA)
Idaho State University (Pocatello, ID)
Illinois Natural History Survey (Champaign, IL)
Illinois State Museum (Springfield, IL)
Illinois State University (Normal, IL)
Indiana State University (Terre Haute, IN)
Indiana University (Bloomington, IN)
Indiana University Southeast (New Albany, IN)
Institut des Universitaires et Musée Lecoq (Clermont-Ferrand, France)
Institute for Botanical Exploration (Mississippi State, MS)
Intermountain Forest and Range Experiment Station, US Forest Service (Boise, ID)
Iowa Department of Natural Resources (Des Moines, IA)
Iowa Native Plant Society (IA)
Jacksonville State University (Jacksonville, AL)
Jacksonville State University (Jacksonville, AL)/Anniston Museum of Natural History (Anniston, AL)
Jamie Whitten Delta States Research Center, USDA/ARS (Stoneville, MS)
Jepson Herbarium, University of California (Berkeley, CA)
Jesup Herbarium, Dartmouth College (Hanover, NH)
John D. Freeman Herbarium, Auburn University (Auburn, AL)
Kagoshima University (Kagoshima, Japan)
Kansas State University (Manhattan, KS)
Kathryn Kalmbach Herbarium, Denver Botanic Gardens (Denver, CO)
Keene State College (Keene, NH)
Kent State University (Kent, OH)
Kentucky State Nature Preserves Commission collections housed at Eastern Kentucky University (Richmond, KY) or Davies Herbarium, University of Louisville (Louisville, KY)
Kew Gardens, Royal Botanic Society (London, U.K.)
Lambert C. Erickson Weed Diagnostic Laboratory, University of Idaho (Moscow, ID)
Laurentian University (Sudbury, Ontario, Canada)
Laval University (Sainte-Foy, Quebec, Canada)
Lindsey Wilson College (Columbia, KY)
Linfield College (McMinnville, OR)
Longwood University (Farmville, VA)
Lord Fairfax Community College (Middletown, VA)
Louisiana State University (Baton Rouge, LA)
Louisiana State University (Shreveport, LA)
Louisiana Tech University (Ruston, LA)
Lyndon State College (Lydonville, VT)
Mammoth Cave National Park (Mammoth Cave, KY)
Marie Selby Botanical Gardens (Sarasota, FL)
Marine Biological Laboratory, George M. Gray Museum (Woods Hole, MA)
Marion Ownbey Herbarium, Washington State University (Pullman, WA)
Marshall University (Huntington, WV)
Mary Wharton collections housed at University of Michigan (Ann Arbor, MI)
Massachusetts College of Liberal Arts (North Adams, MA)
Max Medley collections housed at Western Kentucky University (Bowling Green, KY)
McGill University (Sainte-Anne-de-Bellevue, Quebec, Canada)
McNeese State University (Lake Charles, LA)
Mecklenburg County Park and Recreation (Charlotte, KY)
Michigan State University (East Lansing, MI)
Middle Tennessee State University (Murfreesboro, TN)
Middlebury College (Middlebury, VT)
Milwaukee Public Museum (Milwaukee, WI)
Minnesota Department of Natural Resources (St. Paul, MN)
Mississippi Museum of Natural Science (Jackson, MS)
Mississippi State University (Mississippi State, MS)
Missouri Botanical Garden (St. Louis, MO)
Mohr Herbarium, Alabama Museum of Natural History (Tuscaloosa, AL)
Mohonk Preserve (New Paltz, NY)
Monroe County Department of Parks (Rochester, NY)
Montana State University (Bozeman, MT)
Montreal Botanical Garden Herbarium (Montreal, Quebec, Canada)
Moorhead State University (Moorhead, MN)
Morehead State University (Morehead, KY)
Morris Arboretum, University of Pennsylvania (Philadelphia, PA)
Morton Arboretum (Lisle, IL)
Mount Rainier National Park (Ashford, WA)
Murray State University (Murray, KY)
Museum National d'Histoire Naturelle (Paris, France)
Muskingum College (New Concord, OH)
N. F. Flynn Memorial Herbarium, Goddard College (Plainfield, VT)
Nantucket Maria Mitchell Association (Nantucket, MA)
National Tropical Botanical Garden (Lawai, HI)
Natural Bridges National Monument (Lake Powell, UT)
Natural History Museum of Los Angeles County (housed at RSA, Claremont, CA)
Natural History Museum of Los Angeles County (Los Angeles, CA)
Nebraska Natural Heritage Herbarium (Lincoln, NE)
Nevada State Museum (Carson City, NV)
New Brunswick Museum (Saint John, New Brunswick, Canada)
New England Botanical Club, Harvard University (Cambridge, MA)
New England College (Henniker, NH)
New England Wild Flower Society (Framingham, MA)
New Mexico State University (Las Cruces, NM)
New York Botanical Garden (Bronx, NY)
New York State Museum (Albany, NY)
Nicholls State University (Thibodaux, LA)
North Carolina State University (Raleigh, NC)
North Coast Herbarium of California, Sonoma State University (Rohnert Park, CA)
North Dakota State University (Fargo, ND)
Northeast Louisiana University (Monroe, LA)
Northern Illinois University (DeKalb, IL)
Northern Kentucky University (Highland Heights, KY)
Northern Michigan University (Marquette, MI)
Norton-Brown Herbarium, University of Maryland (College Park, MD)
Nova Scotia Museum of Natural History (Halifax, Nova Scotia, Canada)
Ohio State University (Columbus, OH)
Oklahoma State University (Stillwater, OK)
Old Dominion University (Norfolk, VA)
Olga Lakela Herbarium, University of Minnesota Duluth (Duluth, MN)
Olympic National Park (Port Angeles, WA)
Oregon Natural Heritage Information Center (Corvallis, OR)
Oregon State University (Corvallis, OR)
Ozarks Regional Herbarium, Southwest Missouri State University (Springfield, MO)
Pacific Gas and Electric Company Herbarium (San Ramon, CA)
Pacific Grove Museum of Natural History (Pacific Grove, CA)
Pacific Union College (Angwin, CA)
Patuxent Wildlife Research Center Herbarium (Laurel, MD)
Peabody Essex Museum (Salem, MA)
Pennsylvania State University (University Park, PA)
Philadelphia Scout Ranch Herbarium (PA)
Pine Mountain Settlement School (Pine Mountain, KY)
Planting Fields Arboretum (Oyster Bay, NY)
Plummer's Island Collection, housed at Smithsonian Institution (Washington, DC)
Point Lobos State Reserve Herbarium
Pomona College (housed at RSA, Claremont, CA)
Prince Rupert Forest Region (Smithers, British Columbia, Canada)
Pringle Herbarium, University of Vermont (Burlington, VT)
Private herbarium collection of B.A. Bennett (Whitehorse, YT)
Private herbarium collection of C. Davis
Private herbarium collection of C. Fleming
Private herbarium collection of Edna Banta (Bloomington, IN)
Private herbarium collection of Eric Hulten (Lund, Sweden)
Private herbarium collection of F. Hirst
Private herbarium collection of Frank C. Seymour
Private herbarium collection of G.F. Ledingham (Regina, Saskatchewan, Canada)
Private herbarium collection of Jim Vanderhorst (Elkins, WV)
Private herbarium collection of John Schwegman
Private herbarium collection of Johnnie Varner (Cynthiana, KY)
Private herbarium collection of M. Oldham (Ontario, Canada)
Private herbarium collection of Pamela Weatherbee
Private herbarium collection of Paul J. Harmon (Elkins, WV)
Private herbarium collection of R. Bartgis
Private herbarium collection of R. Wilson
Private herbarium collection of R.H. Waldo
Private herbarium collection of Ralph M. Kriebel (Bedford, IN)
Private herbarium collection of Robert H. Mohlenbrock (Carbondale, IL)
Private herbarium collection of Rodney L. Bartgis
Private herbarium collection of Scott Shriver, Albert Shriver, and Clete Smith (Pittsburg, PA)
Private herbarium collection of Thomas Rawinski
Private herbarium collection of W.D. McIlveen
Private herbarium collection of William Grafton
Pullen Herbarieum, University of Mississippi (University, MS)
Purdue University (West Lafayette, IN)
Purdue University Indianapolis (Indianapolis, IN)
Queens College (Queens, NY)
Queen's University (Kingston, Ontario, Canada)
R.L. McGregor Herbarium, University of Kansas (Lawrence, KS)
R.M. Myers Herbarium, Western Illinois University (Macomb, IL)
Ramsey-Freer Herbarium, Lynchburg College (Lynchburg, VA)
Rancho Santa Ana Botanic Garden (Claremont, CA)
Range Science Herbarium, New Mexico State University (Las Cruces, NM)
Raymond Athey Herbarium, University of Memphis (Memphis, TN)
Reed College (Portland, OR)
Reed Herbarium (housed at MO, St. Louis, MO)
Rice Creek Field Station, State University of New York-Oswego (Oswego, NY)
Richmond Nature Park (Richmond, British Columbia, Canada)
Robert A. Vines Environmental Science Center (Houston, TX)
Robert F. Hoover Herbarium, California Polytechnic State Univeristy (San Luis Obispo, CA)
Robert W. Freckmann Herbarium, University of Wisconsin at Stevens Point (Stevens Point, WI)
Rochester Academy of Science (Rochester, NY)
Rocky Mountain Forest and Range Experiment Station (Albuquerque, NM)
Rocky Mountain Herbarium, University of Wyoming (Laramie, WY)
Rocky Mountain Herbarium, University of Wyoming (Laramie, WY) housed at Forest Service Herbarium, Rocky Mountain Forest and Range Experiment Station (Fort Collins, CO)
Rocky Mountain Research Station (Provo, UT)
Ross Clark collection from Red River Gorge housed at Eastern Kentucky University (Richmond, KY)
Royal Botanical Gardens (Hamilton, ON)
Royal British Columbia Museum (Victoria, British Columbia, Canada)
S.M. Tracy Herbarium, Texas A&M University (College Station, TX)
Sagehen Creek Field Station Herbarium (Truckee, CA)
Saint Bonaventure University (Saint Bonaventure, NY)
Saint Lawrence University (Canton, NY)
Salem College (Winston-Salem, NC)
Salem International University (Salem, WV)
Sam Houston State University (Huntsville, TX)
San Diego Natural History Museum (San Diego, CA)
San Francisco State University (San Francisco, CA)
San Juan College (Farmington, NM)
Santa Barbara Museum of Natural History (Santa Barbara, CA)
Santa Rosa Junior College (Santa Rosa, CA)
Scarborough College, University of Toronto (Toronto, Ontario, Canada)
Seymour Herbarium (Burlington, VT)
Shawnee National Forest (Harrisburg, IL)
Slater Museum of Natural History, University of Puget Sound (Tacoma, WA)
Snake River Plains Herbarium, Boise State University (Boise, ID)
South Dakota State University (Brookings, SD)
South Florida Collections Management Center, Everglades National Park (Homestead, FL)
Southeast Missouri State University (Cape Girardeau, MO)
Southern Illinois University (Carbondale, IL)
Southern Methodist University (Dallas, TX)
Southern Oregon University (Ashland, OR)
St. John's College (Cambridge, England)
St. John's University/College of Saint Benedict (Collegeville, MN)
St. Mary's College (Notre Dame, IN)
State University of New York, College at Oneonta (Oneonta, NY)
Staten Island Institute of Arts and Science (Staten Island, NY)
Stephen F. Austin State University (Nacogdoches, TX)
Sul Ross State University (Alpine, TX)
Swedish Museum of Natural History (Stockholm, Sweden)
Sweeny Granite Mountains Deser Research Center
Syracuse University (Syracuse, NY)
Tawes State Office Building (Annapolis, MD)
Texas A&M University (College Station, TX)
The College of William and Mary (Williamsburg, VA)
Togiak National Wildlife Refuge (Dillingham, AK)
Towson State University (Baltimore, MD)
Troy University (Troy, AL)
Truman G. Yuncker Herbarium, DePauw University (Greencastle, IN)
Tulane University (New Orleans, LA)
U.S. Bureau of Land Management (Lakeview, OR)
U.S. Bureau of Land Management (Painted Rock Ranch, CA)
U.S. Geological Survey, Lafayette Wetlands Center (Lafayette, LA)
UC Davis Herbarium, University of California (Davis, CA)
United States National Arboretum, USDA/ARS (Washington, DC)
United States National Herbarium, Smithsonian Institution (Washington, DC)
Universidad Nacional Autónoma de México (Mexico City, Mexico)
Universite Laval (Sainte-Foy, Quebec, Canada)
University of Alabama (Tuscaloosa, AL)
University of Alaska (Fairbanks, AK)
University of Alberta (Edmonton, Alberta, Canada)
University of Arizona (Tucson, AZ)
University of Arkansas (Fayetteville, AR)
University of Arkansas (Monticello, AR)
University of Arkansas at Little Rock (Little Rock, AR)
University of British Columbia (Vancouver, British Columbia, Canada)
University of Calgary (Calgary, Alberta, Canada)
University of California (Berkeley, CA)
University of California (Davis, CA)
University of California (Irvine, CA)
University of California (Los Angeles, CA)
University of California (Santa Barbara, CA)
University of California (Santa Cruz, CA)
University of California at Riverside (Riverside, CA)
University of Charleston (Charleston, WV)
University of Cincinnati (Cincinnati, OH)
University of Colorado (Boulder, CO)
University of Connecticut (Storrs, CT)
University of Florida Herbarium, Florida Museum of Natural History (Gainesville, FL)
University of Georgia (Athens, GA)
University of Guelph (Guelph, Ontario, Canada)
University of Hawaii (Honolulu, HI)
University of Idaho (Moscow, ID)
University of Idaho, College of Forestry (Moscow, ID)
University of Illinois (Urbana, IL)
University of Iowa (housed at ISC, Ames, IA)
University of Kentucky (Lexington, KY)
University of Maine (Orono, ME)
University of Maryland (College Park, MD)
University of Massachusetts (Amherst, MA)
University of Michigan (Ann Arbor, MI)
University of Minnesota (St. Paul, MN)
University of Minnesota Herbarium, J.F. Bell Museum of Natural History (St. Paul, MN)
University of Montana (Missoula, MT)
University of Montreal (Montreal, Quebec, Canada)
University of Nebraska (Omaha, NE)
University of Nebraska at Kearney (Kearney, NE)
University of Nevada (Las Vegas, NV)
University of Nevada (Reno, NV)
University of New Brunswick (Fredericton, New Brunswick, Canada)
University of New Mexico (Albuquerque, NM)
University of New Orleans (New Orleans, LA)
University of North Alabama (Florence, AL)
University of North Carolina (Chapel Hill, NC)
University of Northern Colorado (Greeley, CO)
University of Notre Dame (Notre Dame, IN)
University of Oklahoma (Norman, OK)
University of Oregon (housed at OSC, Corvallis, OR)
University of Patras (Patras, Greece)
University of Pennsylvania (Philadelphia, PA)
University of Peshawar (Peshawar, Pakistan)
University of Prince Edward Island (Charlottetown, Prince Edward Island, Canada)
University of Rhode Island (Kingston, RI)
University of the South (Sewanee, TN)
University of South Alabama (Mobile, AL)
University of South Florida (Tampa, FL)
University of Southern Mississippi (Hattiesburg, MS)
University of Southwestern Louisiana (Lafayette, LA)
University of Tennessee (Knoxville, TN)
University of Texas (Austin, TX)
University of Texas (El Paso, TX)
University of Victoria (Victoria, British Columbia, Canada)
University of Washington (Seattle, WA)
University of Waterloo (Waterloo, Ontario, Canada)
University of West Florida (Pensacola, FL)
University of Western Ontario (London, Ontario, Canada)
University of Wisconsin (La Crosse, WI)
University of Wisconsin (Madison, WI)
University of Wisconsin (Superior, WI)
University of Wisconsin at Green Bay (Green Bay, WI)
University of Wisconsin at Oshkosh (Oshkosh, WI)
University of Wisconsin at Platteville (Platteville, WI)
University of Wyoming (Laramie, WY)
University of Northern Iowa (Cedar Falls, IA)
US Forest Service Herbarium (NV)
Utah State University (Logan, UT)
Utah Valley University (Orem, UT)
V. L. Komarov Botanical Institute, Russian Academy of Sciences (Saint Petersburg, Russia)
Valdosta State University (Valdosta, GA)
Vanderbilt University (Nashville, TN)
Vascular Plant Herbarium, Agriculture and Agri-Food Canada (Ottawa, Ontario, Canada)
Vascular Plant Herbarium, Royal Ontario Museum (Toronto, Ontario, Canada)
Virginia Natural Heritage Program (Richmond, VA)
Virginia Polytechnic Institute and State University (Blacksburg, VA)
W.P. Fraser Herbarium, University of Saskatchewan (Saskatoon, Saskatchewan, Canada)
W.S. Turrell Herbarium, Miami University (Oxford, OH)
Wabash College (Crawfordsville, IN)
Walter B. McDougall Herbarium, Museum of Northern Arizona (Flagstaff, AZ)
Washington State University (Pullman, WA)
Weeks Bay Herbarium
West Texas A&M University (Canyon, TX)
West Virginia Army National Guard at Camp Dawson (Camp Dawson, WV)
West Virginia Natural Heritage Program (Elkins, WV)
West Virginia University (Morgantown, WV)
Western Carolina University (Cullowhee, NC)
Western Kentucky University (Bowling Green, KY)
Western Washington University (Bellingham, WA)
Westfield State College (Westfield, MA)
Weston New Mexico University (Silver City, NM)
Whitman College (Walla Walla, WA)
Wilfrid Laurier University (Waterloo, Ontario, Canada)
Willamette University, housed at Oregon State University (Corvallis, OR)
William Darlington Herbarium, West Chester University (West Chester, PA)
William Penn University (Oskaloosa, IA)
Windham College (Putney, VT)
Wrangell-St. Elias National Park and Preserve (Copper Center, AK)
Yale University (New Haven, CT)
Yellowstone National Park (Yellowstone National Park, WY)
Youngstown State University (Youngstown, OH)

Natural Heritage and Conservation Programs

Alaska Natural Heritage Program

Alberta Natural Heritage Information Centre

Arizona Heritage Data Management System

Arkansas Natural Heritage Commission

Atlantic Canada Conservation Data Centre 

British Columbia Conservation Data Centre

California Department of Fish and Game, Natural Diversity Database

Colorado Natural Heritage Program

Connecticut Natural Diversity Data Base

Delaware Natural Heritage Program

District of Columbia Natural Heritage Program

División de Patrimonio Natural Area de Planificación Integral Departamento de Recursos Naturales y Ambientales de Puerto Rico

Florida Natural Areas Inventory 

Georgia Natural Heritage Program

Hawaii Natural Heritage Program

Idaho Conservation Data Center

Idaho Natural Heritage Program

Illinois Natural Heritage Program

Indiana Natural Heritage Data Center

Iowa Natural Areas Inventory

Kansas Natural Heritage Inventory

Kentucky Natural Heritage Program

Le Centre de Données sur le Patrimoine Naturel du Québec

Louisiana Natural Heritage Program

Maine Natural Areas Program

Manitoba Conservation Data Centre 

Maryland Heritage and Biodiversity Conservation Programs

Massachusetts Natural Heritage and Endangered Species Program

Michigan Natural Features Inventory

Minnesota Botanical Studies

Minnesota Natural Heritage and Nongame Research Program

Missouri Natural Heritage Program

Montana Natural Heritage Program

Nebraska Natural Heritage Program

Nevada Natural Heritage Program

New Hampshire Natural Heritage Bureau

New Jersey Natural Heritage Program

New Mexico Natural Heritage Program

New York Natural Heritage Program

North Carolina Natural Heritage Program

Ohio Natural Heritage Program

Oklahoma Natural Heritage Inventory

Ontario Natural Heritage Information Centre

Pennsylvania Natural Heritage Program

Saskatchewan Conservation Data Centre

South Carolina Heritage Trust

South Dakota Natural Heritage Program

Tennessee Division of Natural Heritage Inventory Program

Texas Biological and Conservation Data System

The Nature Conservancy

The Nature Conservancy. Invasives on the Web.  Available on the Internet at: http://tncweeds.ucdavis.edu/alert/archive.html

Utah Natural Heritage Program

Vermont Nongame and Natural Heritage Program

Virginia Division of Natural Heritage

Wisconsin Natural Heritage Program

Wyoming Natural Diversity Database

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