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PLANTS Profile


Sonchus L.
sowthistle

Data Source

Last revised by:
USDA NRCS National Plant Data Team
Curated and maintained by:
USDA NRCS National Plant Data Center
 

Data Documentation

Documentation State Type
1922. Torreya DE Literature
1966. Castanea WV Literature
1968. Castanea MS Literature
1972. Castanea VA Literature
1977. Survey of sensitive plants of the Algodones Dunes (report for Bureau of Land Management, Riverside, CA). Unpublished. Westec Services Inc., Tustin, CA. CA Literature
1985. Wassman Journal of Biology CA Literature
1988. List of plants on Vina Plains Preserve, Vina Plains Preserve Handbook, rev. 1987. Unpublished. Nature Conservancy CA Literature
1992. Journal of the Arizona-Nevada Academy of Science AZ Literature
1992. Phytologia AK Literature
1993. Crossosoma CA Literature
1994. Plant species list, Cosumnes River Preserve. Unpublished CA Literature
1998. New Mexico Naturalist's Notes NM Literature
1999. University of Minnesota Herbarium: Vascular plant collection (http://www.wildflowers.umn.edu) MN Literature
2000. CalFlora: Information on California plants for education, research and conservation (http://www.calflora.org/). The CalFlora Database, Berkeley CA Literature
Abrams, L. 1960. An illustrated flora of the Pacific States. Stanford University Press, Stanford WA Literature
Anonymous. Personal communication to John Kartesz AZ, CA, DC, DE, LA, MS, NM, OR, PA, TN, TX Literature
Atwood, J.T., et al. 1973. Check list of Vermont plants. Vermont Botanical and Bird Club VT Literature
BOIS. Specimen at Rocky Mountain Research Station, Boise, Idaho, (http://www.fs.fed.us/rm/boise/research/shrub/greatbasin.shtml). ID Specimen
BOIS. Specimen at Rocky Mountain Research Station, Boise, Idaho, (http://www.fs.fed.us/rm/boise/research/shrub/greatbasin.shtml). ID Specimen
Barger, T.W., D.D. Spaulding, and B.D. Holt. 2013. The vascular flora of the Perdido River Forever Wild tract, Baldwin County, Alabama. Castanea 78: 119-133 AL Literature
Barry, W.J., et al. 1977. Inglenook Fen; A study and plan. Unpublished. State of California, California Department of Parks & Recreation CA Literature
Booth, W.E., and J.C. Wright. 1966. Flora of Montana. Montana State University, Bozeman MT Literature
Britton, N.L., and P. Wilson. 1926. Botany of Porto Rico and the Virgin Islands. Scientific Survey of Porto Rico and the Virgin Islands. New York Academy of Sciences, New York PR, VI Literature
Brouillet, L., F. Coursol, and M. Favreau. 2006. VASCAN, the Database of Vascular Plants of Canada. Herbier Marie-Victorin, Institut de recherche en biologie végétale, Université de Montréal AB, BC, GL, LB, MB, NB, NF, NS, NT, ON, PE, QC, SB, SK, YT Literature
Brown, M.L., and R.G. Brown. 1984. Herbaceous plants of Maryland. Port City Press, Inc., Baltimore DE, MD Literature
Bryson, C.T.,and D.A. Skojac, Jr. 2011. An annotated checklist of the vascular flora of Washington County, Mississippi. Journal of the Botanical Research Institute of Texas 5: 855-866 MS Literature
Campbell, C.S., et al. 1995. Checklist of the vascular plants of Maine, 3rd revision. Bulletin of the Josselyn Botanical Society, No. 13 ME Literature
Campbell, J., and M. Medley. 2012. The atlas of vascular plants in Kentucky (http://www.bluegrasswoodland.com) KY Literature
Campbell, Julian. Personal communication KY Literature
Charboneau, J.L.M., B.E. Nelson, and R.L. Hartman. 2013. A floristic inventory of Phillips and Valley counties, Montana (U.S.A.). Journal of the Botanical Research Institute of Texas 7(2): 847-878 MT Literature
Chester, E.W, B.E. Wofford, and R. Kral. 1997. Atlas of Tennessee vascular plants. Vol. 2. Miscellaneous Publication No. 13. Austin Peay State University, Clarksville TN Literature
Chester, E.W., B.E. Wofford, R. Kral, H.R. DeSelm, and A.M. Evans. 1993. Atlas of Tennessee vascular plants. 2 vols. Center for Field Biology Miscellaneous Publication No. 9/13. Austin Peay State University, Clarksville TN Literature
Clark, S. 1995. United States Fish and Wildlife Service report. Unpublished, on file at UC Davis Herbarium CA Literature
Clemants, Steven. Personal communication NY Literature
Creso, I. 1984. Vascular plants of western Washington. Johnson Cox Printers, Tacoma WA Literature
Crovello, T.J., C.A. Keller, and J.T. Kartesz. 1983. The vascular plants of Indiana: A computer based checklist. University of Notre Dame Press, Notre Dame IN Literature
Cullina, M.D., B. Connolly, B. Sorrie, and P. Somers. 2011. The vascular plants of Massachusetts: A county checklist, first revision. Massachusetts Natural Heritage & Endangered Species Program, Massachusetts Division of Fisheries and Wildlife, Westborough MA Literature
DUL. Specimen at University of Minnesota, Duluth, Minnesota, (http://www.d.umn.edu/biology/herbarium/). WI Specimen
Damrel, D., D.J. Pinkava, and L.R. Landrum. The Phoenix flora (http://collections.asu.edu/herbarium/phoenixflora/index.html) AZ Literature
Damrel, D.Z. San Tan Mountain Semi-regional Park checklist (in progress) (http://lifesciences.asu.edu/herbarium/). Arizona State University, Tempe AZ Literature
Davis, R. 1952. Flora of Idaho. W.C. Brown Co., Dubuque ID Literature
Deam, C.C. 1940. Flora of Indiana. Wm.B. Burford Printing Co., Indianapolis IN Literature
Densmore STHP8 (ALA V0132552). Specimen at University of Alaska Museum, Fairbanks, Alaska, (http://www.uaf.edu/museum/collections/herb/). AK Specimen
District of Columbia Natural Heritage Program DC Literature
Domangue, B.E., and C.K. McMullen. 2013. Floristic survey of the vascular plants of Shenandoah County, Virginia. Castanea 78: 312-322 VA Literature
Dorn, R.D. 1977. Manual of the vascular plants of Wyoming. 2 vols. Garland Publishing, Inc., New York WY Literature
Dorn, R.D. 1984. Vascular plants of Montana. Mountain West Publishers, Cheyenne MT Literature
Dowhan, J.J. 1979. Preliminary checklist of the vascular flora of Connecticut (growing without cultivation). State Geological and Natural History Survey of Connecticut, Natural Resources Center, Department of Environmental Protection. Hartford CT Literature
Duffy 93-954 (ALA V0114898). Specimen at University of Alaska Museum, Fairbanks, Alaska, (http://www.uaf.edu/museum/collections/herb/). AK Specimen
Duffy 95-590 (ALA V0120594). Specimen at University of Alaska Museum, Fairbanks, Alaska, (http://www.uaf.edu/museum/collections/herb/). AK Specimen
Duffy, Tande & Robinson 95-742 (ALA V0120699). Specimen at University of Alaska Museum, Fairbanks, Alaska, (http://www.uaf.edu/museum/collections/herb/). AK Specimen
Duncan, W.H., and J.T. Kartesz. 1981. Vascular flora of Georgia. University of Georgia Press, Athens GA Literature
EOSC. Specimen at Eastern Oregon University, Lagrande, Oregon, (http://mgd.nacse.org/cgi-bin/sqml2.0/eastoregon/eastor.qml). OR Specimen
Eilers, L.J., and D.M. Roosa. 1991. The vascular plants of Iowa. University of Iowa Press, Iowa City IA Literature
Fisher, T.R. 1988. The Dicotyledoneae of Ohio. Part 3. Asteraceae. Ohio State University Press, Columbus OH Literature
Gasser S.N. (ALA 00009832). Specimen at University of Alaska Museum, Fairbanks, Alaska, (http://www.uaf.edu/museum/collections/herb/). AK Specimen
Gasser S.N. (ALA 00010350). Specimen at University of Alaska Museum, Fairbanks, Alaska, (http://www.uaf.edu/museum/collections/herb/). AK Specimen
George, G.G. 1992. A synonymized checklist of the plants found growing in Rhode Island. Rhode Island Wild Plant Society RI Literature
Glenn, S.D. (ed.). 2013. New York Metropolitan Flora database. New York Metropolitan Flora Project, Brooklyn Botanic Garden, New York CT, NJ, NY Literature
Goldman, D.H. 1996. A preliminary vascular flora of the French Creek drainage of Western New York State. New York Flora Association Newsletter 7 (2): 3-12 NY Literature
Grant 88-200 (ALA V0078273). Specimen at University of Alaska Museum, Fairbanks, Alaska, (http://www.uaf.edu/museum/collections/herb/). AK Specimen
Grant 90-1281 (ALA V0105941). Specimen at University of Alaska Museum, Fairbanks, Alaska, (http://www.uaf.edu/museum/collections/herb/). AK Specimen
Grant 90-1291 (ALA V0105942). Specimen at University of Alaska Museum, Fairbanks, Alaska, (http://www.uaf.edu/museum/collections/herb/). AK Specimen
Grant 90-1292 (ALA V0105943). Specimen at University of Alaska Museum, Fairbanks, Alaska, (http://www.uaf.edu/museum/collections/herb/). AK Specimen
Halliday, Glenn. Personal communication OR Literature
Hannick, V.C., J.N. Mink, J.R. Singhurst, and W.C. Holmes. 2013. Annotated checklist of the vascular flora of McLennan County, Texas. Phytoneuron (http://www.phytoneuron.net/2013Phytoneuron/29PhytoN-McLennan.pdf) 2013-29(29): 1-37 TX Literature
Hartman, R. Atlas of the vascular flora of Wyoming. Unpublished and undated WY Literature
Harvill, A.M., C.E. Stevens, and D.M.E. Ware. 1981. Atlas of the Virginia flora, Part II. Dicotyledons. Virginia Botanical Associates, Farmville VA Literature
Hatch, S.L., K.N. Gandhi, and L.E. Brown. 1990. Checklist of the vascular plants of Texas (MP-1655). Texas Agricultural Experiment Station, College Station TX Literature
Haubrich, G. 2002. Noxious weed spreadsheet. Washington State Department of Agriculture, Olympia WA Literature
Haynes, R. 1990. A database of the Alabama flora. Unpublished AL Literature
Heil, K.D, and S.L. O'Kane, Jr. 2002. Catalog of the Four Corners flora - vascular plants of the San Juan River Drainage: Arizona, Colorado, New Mexico and Utah, 6th ed. (http://www.sanjuancollege.edu/documents/Herbarium/FourCornersFlora.pdf) AZ, NM, UT Literature
Hickman, J.C. (ed.). 1993. The Jepson manual. University of California Press, Berkeley CA Literature
Hogan, Tim. Personal communication CO Literature
Hough, M.Y. 1978. New Jersey Wild Plants. Harmony Press, Harmony NJ Literature
Hrusa, G.F. 1993. Manual of the vascular plants of Caswell Memorial State Park, rev. 1997-1998. Unpublished. California State Parks & Recreation CA Literature
Hrusa, G.F. 1993. Report for PAR Environmental Services, Sacramento, CA. Unpublished CA Literature
Hrusa, G.F. 1996. Private checklist on file at UC Davis Herbarium. Unpublished CA Literature
Hrusa, G.F. 1996. Report submitted to North State Resources Inc., Redding. Unpublished CA Literature
Hrusa, G.F. 1997. Report submitted to Foster-Wheeler Inc., Sacramento, CA. Unpublished CA Literature
Hrusa, G.F., and J. Glazner. 1997. Report submitted to J. Glazner, Environmental Consulting, for Sierra Pacific Industries (Marin Quarry owner). Unpublished CA Literature
Hrusa, G.F., and J. Glazner. 2001. Report submitted to North Fork Associates, Auburn CA. Unpublished CA Literature
Hulten, E. 1968. Flora of Alaska and neighboring territories: A manual of the vascular plants. Stanford University Press, Stanford AK Literature
Hyatt, Philip. Personal communication MS, OH Literature
Hébert s.n. (ALA V0119745). Specimen at University of Alaska Museum, Fairbanks, Alaska, (http://www.uaf.edu/museum/collections/herb/). AK Specimen
ID. Specimen at University of Idaho, Moscow, Idaho, (http://www.sci.uidaho.edu/biosci/herbarium/vtour.html). ID Specimen
ID. Specimen at University of Idaho, Moscow, Idaho, (http://www.sci.uidaho.edu/biosci/herbarium/vtour.html). ID Specimen
ID. Specimen at University of Idaho, Moscow, Idaho, (http://www.sci.uidaho.edu/biosci/herbarium/vtour.html). ID Specimen
IDS. Specimen at Idaho State University, Pocatello, Idaho, (http://imnh.isu.edu/Collections/Botany.htm). ID Specimen
IDS. Specimen at Idaho State University, Pocatello, Idaho, (http://imnh.isu.edu/Collections/Botany.htm). ID Specimen
IDS. Specimen at Idaho State University, Pocatello, Idaho, (http://imnh.isu.edu/Collections/Botany.htm). ID Specimen
INVADERS database (http://invader.dbs.umt.edu/) ID, MT, OR, WA, WY Literature
Illinois Plant Information Network (ILPIN) IL Literature
Imdorf, G.J. 1995. Flora and vegetation of the Sierra Ancha Wilderness Area, Tonto National Forest, Gila County, Arizona. M.S. Thesis (http://lifesciences.asu.edu/herbarium/). Arizona State University, Tempe AZ Literature
James, S.A., and C.T. Imada (eds.). 2007. Pacific Basin vascular plant checklist. Bernice Pauahi Bishop Museum, Honolulu UM Literature
Johnston, B. 1991. List of Colorado plants. Unpublished CO Literature
Jones, S.B., and N. Coile. 1988. The distribution of the vascular flora of Georgia. Herbarium, Department of Botany, Athens GA Literature
Jones, S.D., J.K. Wipff, and P.M. Montgomery. 1997. Vascular plants of Texas: a comprehensive checklist including synonymy, bibliography, and index. University of Texas Press, Austin TX Literature
Kartesz, J.T. 1988. A flora of Nevada. University of Nevada, Reno NV Literature
Kartesz, J.T. 2001. Atlas of the Nevada flora. Unpublished NV Literature
Kartesz, J.T. 2002. Atlas of the Arizona flora. Unpublished AZ Literature
Kearney, T., and R.H. Peebles. 1960. Arizona flora with supplement. University of California Press, Los Angeles AZ Literature
Kelly, R.,and Y. Gregor. 2014. Flora survey of Rocky Point Marsh, Queens County, New York. Long Island Botanical Society Quarterly Newsletter 24: 1, 3-6 NY Literature
Krieckhaus 458 (ALA V0158015). Specimen at University of Alaska Museum, Fairbanks, Alaska, (http://www.uaf.edu/museum/collections/herb/). AK Specimen
Kuhn, B., B.E. Nelson,and R.L. Hartman. 2011. A floristic inventory of the Cimarron National Grassland (Kansas) and the Comanche National Grassland (Colorado). Journal of the Botanical Research Institute of Texas 5: 753-772 CO Literature
Larson, J., B. Reif, B.E. Nelson, and R.L. Hartman. 2014. Floristic studies in north central New Mexico, U.S.A. The Sangre de Cristo Mountains. Journal of the Botanical Research Institute of Texas 8: 271-303 NM Literature
Liogier, H.A., and L.F. Martorell. 1982. Flora of Puerto Rico and adjacent Islands: A systematic synopsis. Editorial de la Universidad de Puerto Rico PR Literature
Lowe, E.N. 1921. Plants of Mississippi. Mississippi State Geological Survey Bulletin No. 17 MS Literature
Magee, D. Flora of New England. Unpublished and undated CT, MA, ME, NH, NY, RI, VT Literature
Mansfield, D.H. 2000. Flora of Steens Mountain. Oregon State University Press, Corvallis OR Literature
Martin, W.C., and C.R. Hutchins. 1980. A flora of New Mexico. Strauss & Cramer, Germany NM Literature
McAvoy, William. Personal communication DE Literature
McGregor, R.L. Personal communication KS Literature
McGregor, R.L., et al. 1977. Atlas of the flora of the Great Plains. Iowa State University Press, Ames IA, KS, ND, NE, OK, SD Literature
Medley, M.E. 1993. An annotated catalogue of the known or reported vascular flora of Kentucky. University of Louisville, Louisville KY Literature
Meyer, J. 1990. Chrysler Herbarium Checklist. Manuscript NJ Literature
Mitchell, R.S. (ed.). 1986. A checklist of New York State plants. Contributions of a Flora of New York State, Checklist III. New York State Bulletin No. 458. New York State Museum, Albany NY Literature
Mohlenbrock, R.H. 1986. Guide to the vascular flora of Illinois, rev. ed. Southern Illinois University Press, Carbondale and Edwardsville IL Literature
Mohr., C. 1901. Plant life of Alabama. Contributions from the United States National Herbarium VI AL Literature
Muller 3348 (ALA 00087213). Specimen at University of Alaska Museum, Fairbanks, Alaska, (http://www.uaf.edu/museum/collections/herb/). AK Specimen
NCU. Specimen at University of North Carolina, Chapel Hill, North Carolina, (http://www.herbarium.unc.edu). NC, TN Specimen
NCU. Specimen at University of North Carolina, Chapel Hill, North Carolina, (http://www.herbarium.unc.edu). VA Specimen
NMC. Specimen at New Mexico State University, Las Cruces, New Mexico, (http://biology-web.nmsu.edu/herbarium/). NM Specimen
New York Flora Association. 1990. Preliminary vouchered atlas of New York State flora, ed. 1. New York State Museum Institute, Albany NY Literature
Norton-Brown Herbarium. Norton-Brown Herbarium (MARY) plant distribution records. 2014 (http://www.nbh.psla.umd.edu). University of Maryland, College Park MD Literature
Oregon Flora Project species list; species noted on herbarium specimens. Unpublished and undated OR Literature
Ownbey, G.B., and T. Morley. 1991. Vascular plants of Minnesota: A checklist and atlas. University of Minnesota Press, Minneapolis MN Literature
Parker S.N. (ALA V0078254). Specimen at University of Alaska Museum, Fairbanks, Alaska, (http://www.uaf.edu/museum/collections/herb/). AK Specimen
Peck, M.E. 1961. A manual of the higher plants of Oregon, 2nd ed. Oregon State University Press, Corvallis OR Literature
Radford, A.E., H.E. Ahles, and C.R. Bell. 1965. Atlas of the vascular flora of the Carolinas. Department of Botany Technical Bulletin No. 165. Chapel Hill NC, SC Literature
Radford, A.E., H.E. Ahles, and C.R. Bell. 1968. Manual of the vascular flora of the Carolinas. University of North Carolina Press, Chapel Hill NC, SC Literature
Ralph, R.A. Checklist of the vascular plants of the Coastal Plain of Delaware. Unpublished and undated. University of Delaware Department of Biology DE Literature
Reed, R. 1987. Wisconsin vascular plants. Unpublished WI Literature
Reif, B., J. Larson, B.F. Jacobs, B.E. Nelson, and R.L. Hartman. 2009. Floristic studies in north central New Mexico, U.S.A. The Tusas Mountains and the Jemez Mountains. Journal of the Botanical Research Institute of Texas 3: 921-961 NM Literature
Rhoads, A.F., and W.M. Klein, Jr. 1993. The vascular flora of Pennsylvania. Annotated checklist and atlas. American Philosophical Society, Philadelphia PA Literature
Richards, C.D., F. Hyland, and L.M. Eastman. 1983. Revised check-list of the vascular plants of Maine. Bulletin of the Josselyn Botanical Society, No. 11 ME Literature
Ripley, J.D. 1994. Vegetation of the United States Air Force Academy and the adjacent Regions of the Pike National Forest, El Paso County, Colorado. Department of Biology, United States Air Force Academy, Colorado Springs CO Literature
SOC. Specimen at Southern Oregon University, Ashland, Oregon, (http://www.sou.edu/Biology/Herbarium/Herbarium.htm). OR Specimen
Sattler 85-74 (ALA V0084282). Specimen at University of Alaska Museum, Fairbanks, Alaska, (http://www.uaf.edu/museum/collections/herb/). AK Specimen
Seymour, F.C. 1969. The flora of New England. Charles E. Tuttle Company, Rutland NH Literature
Shultz, Leila M. Personal communication UT Literature
Smith, E.B. 1988. An atlas and annotated list of the vascular plants of Arkansas, 2d ed. AR Literature
Sorrie, B.A. 1992. County checklist of Massachusetts plants. Unpublished MA Literature
Specimen Management System for California Herbaria (SMASCH) (http://www.mip.berkeley.edu/www_apps/smasch/) CA Literature
Specimen at Douglas County Museum, Roseburg, Oregon, (http://www.co.douglas.or.us/museum/collections.asp). OR Specimen
Specimen at Douglas County Museum, Roseburg, Oregon, (http://www.co.douglas.or.us/museum/collections.asp). OR Specimen
Specimen at Douglas County Museum, Roseburg, Oregon, (http://www.co.douglas.or.us/museum/collections.asp). OR Specimen
Specimen at Eastern New Mexico University, Portales, New Mexico, (http://wwwstd.enmu.edu/pollockd/botany.html). NM Specimen
Specimen at Eastern New Mexico University, Portales, New Mexico, (http://wwwstd.enmu.edu/pollockd/botany.html). NM Specimen
Specimen at Linfield College, McMinnville, Oregon, (http://www.linfield.edu/bio/). OR Specimen
St. John, H. 1963. Flora of southeastern Washington and adjacent Idaho, 3rd ed. Outdoor Pictures, Escondido WA Literature
Stensvold 6882 (ALA V0129621). Specimen at University of Alaska Museum, Fairbanks, Alaska, (http://www.uaf.edu/museum/collections/herb/). AK Specimen
Strausbaugh, P.D., and E.L. Core. 1977. Flora of West Virginia, 2nd ed., 4 vols. West Virginia Bulletin, Morgantown WV Literature
Straw, R. Jackson and Josephine County checklist. Unpublished and undated OR Literature
Tatnall, E. 1860. Catalogue of the phaenogamous and filicoid plants of New Castle County, Delaware. Wilmington Institute, Wilmington DE Literature
Tatnall, R.R. 1946. Flora of Delaware and the Eastern Shore. Society of Natural History of Delaware, Lancaster DE Literature
Thomas, R.D., and C.M. Allen. 1993. Atlas of the vascular flora of Louisiana, vols. 1-3. Louisiana Department of Wildlife and Fisheries. Natural Heritage Program, Fort Worth, TX LA Literature
Thomas, R.D., and C.M. Allen. 1997. Atlas of the vascular flora of Louisiana, vols. 1-3 (Plus updates). Louisiana Department of Wildlife and Fisheries. Natural Heritage Program, Baton Rouge LA Literature
Turner, B.L., H. Nichols, G. Denny, and O. Doron. 2003. Atlas of the Vascular Plants of Texas, vol. 1. Sida, Botanical Miscellany, No. 24. Botanical Research Institute of Texas Press, Fort Worth TX Literature
UNM. Specimen at University of New Mexico, Albuquerque, New Mexico, (http://www.msb.unm.edu/herbarium/). NM Specimen
UNM. Specimen at University of New Mexico, Albuquerque, New Mexico, (http://www.msb.unm.edu/herbarium/). NM Specimen
UNM. Specimen at University of New Mexico, Albuquerque, New Mexico, (http://www.msb.unm.edu/herbarium/). NM Specimen
Viereck 10349 (ALA V0118396). Specimen at University of Alaska Museum, Fairbanks, Alaska, (http://www.uaf.edu/museum/collections/herb/). AK Specimen
Voss, E.G. 1985. Michigan flora. Cranbrook Institute of Science, Bloomfield Hills MI Literature
WS. Specimen at Washington State University, Pullman, Washington, (http://www.wsu.edu/~wsherb/). WA Specimen
WS. Specimen at Washington State University, Pullman, Washington, (http://www.wsu.edu/~wsherb/). WA Specimen
WS. Specimen at Washington State University, Pullman, Washington, (http://www.wsu.edu/~wsherb/). WA Specimen
WTU. Specimen at University of Washington, Seattle, Washington, (http://www.washington.edu/burkemuseum/collections/herbarium/index.php). WA Specimen
WTU. Specimen at University of Washington, Seattle, Washington, (http://www.washington.edu/burkemuseum/collections/herbarium/index.php). WA Specimen
WTU. Specimen at University of Washington, Seattle, Washington, (http://www.washington.edu/burkemuseum/collections/herbarium/index.php). WA Specimen
Wagner, W.L., D.R. Herbst, and S.H. Sohmer. 1990. Manual of the flowering plants of Hawai'i, 2 vols. University of Hawaii Press, Bishop Museum, Honolulu HI Literature
Weber, W.R., and W.T. Corcoran. 1993. Atlas of Missouri vascular plants. Unpublished. Southwest Missouri State University and the Missouri Native Plant Society MO Literature
Welsh, S.L., N.D. Atwood, L.C. Higgins, and S. Goodrich. 1987. A Utah flora. Great Basin Naturalist Memoirs No. 9. Brigham Young University Press, Provo UT Literature
West Virginia county level data WV Literature
Wherry, E.T., J.M. Fogg, and H.A. Wahl. 1979. Atlas of the flora of Pennsylvania. Morris Arboretum, Philadelphia PA Literature
Wieland, R.G. 2004. County observation records of Mississippi Vegetation Survey Project (Samples taken 9-1989 to 11-2003, inclusive of collection records and of field surveys by other authors). Mississippi Museum of Natural Science, Department of Wildlife, Fisheries and Parks, Jackson MS Literature
Wieland, R.G. 2004. County records of Mississippi collections (#5501-9869, 9/12/89 to 1/23/04) deposited at Mississippi Museum of Natural Science Herbarium (MMNS). Mississippi Museum of Natural Science, Department of Wildlife, Fisheries and Parks, Jackson MS Literature
Wilken, Dieter. Personal communication CA Literature
Wisconsin vascular plants (http://www.botany.wisc.edu/herbarium). Wisconsin State Herbarium: University of Wisconsin - Madison WI Literature
Wunderlin, R.P., B.F. Hansen,and E.L. Bridges. 1996. Atlas of Florida vascular plants: CD-ROM. University of South Florida, Tampa FL Literature
Wunderlin, R.P., and B.F. Hansen. 2008. Atlas of Florida Vascular Plants (http://florida.plantatlas.usf.edu) [online: accessed on 8 November 2014]. Institute for Systematic Botany, University of South Florida, Tampa, FL FL Literature
Yatskievych, G., and J. Turner. 1990. Catalogue of the flora of Missouri. Monographs in Systematic Botany from the Missouri Botanical Garden 37. Missouri Botanical Garden, St. Louis MO Literature
 
 
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