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PLANTS Profile


Conyza canadensis (L.) Cronquist var. canadensis
Canadian horseweed

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
1900. Memoirs of the New York Botanical Garden. New York Botanical Garden, New York MT Literature
1968. Castanea MS Literature
1991. Douglasia WA Literature
1992. Phytologia AK Literature
1999. University of Minnesota Herbarium: Vascular plant collection (http://www.wildflowers.umn.edu) MN Literature
Anonymous. Personal communication to John Kartesz AZ, CO, DC, IA, ID, IL, ND, NE, NM, NV, OR, SD, UT, WI Literature
BOIS. Specimen at Rocky Mountain Research Station, Boise, Idaho, (http://www.fs.fed.us/rm/boise/research/shrub/greatbasin.shtml). ID Specimen
Bluhm, Wilbur. Personal communication OR Literature
Booth, W.E., and J.C. Wright. 1966. Flora of Montana. Montana State University, Bozeman MT 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, MB, NB, NF, NS, NT, ON, PE, QC, SB, SK Literature
Brown, M.L., and R.G. Brown. 1984. Herbaceous plants of Maryland. Port City Press, Inc., Baltimore MD Literature
CIC. Specimen at Albertson College of Idaho, Caldwell, Idaho, (http://www.collegeofidaho.edu/academics/biology/Resources/handbook/default.asp?mainID=10&subID=4). ID Specimen
Campbell, Julian. Personal communication KY Literature
Clemants, Steven. Personal communication NJ Literature
Cornelius, L.C., and S.R. Schuller. 1982. Checklist of the vascular plants of Cedar Flats Research Natural Area. Pacific Northwest Forest and Range Experiment Station Administrative Report PNW-5. USDA Forest Service 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
Damrel, D., D.J. Pinkava, and L.R. Landrum. The Phoenix flora (http://collections.asu.edu/herbarium/phoenixflora/index.html) AZ Literature
Deam, C.C. 1940. Flora of Indiana. Wm.B. Burford Printing Co., Indianapolis IN Literature
Deramus, R. 1970. Studies on the flora of the vascular plants of Dauphin Island, Mobile Co. Alabama. Ph.D. Dissertation. University of Alabama, Tuscaloosa MS 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
Duncan, W.H., and J.T. Kartesz. 1981. Vascular flora of Georgia. University of Georgia Press, Athens GA Literature
Ferren, W.R. 1985. Carpinteria Salt Marsh, annotated and illustrated catalogue of vascular plants. Herbarium Publication No. 4. University of California, Santa Barbara CA Literature
Fisher, T.R. 1988. The Dicotyledoneae of Ohio. Part 3. Asteraceae. Ohio State University Press, Columbus OH Literature
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 NJ, NY Literature
Hartman, R. 1992. Wyoming phytogeography. Unpublished WY 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
Haynes, R. 1990. A database of the Alabama flora. Unpublished AL Literature
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
Jones, G.N. 1938. The flowering plants and ferns of Mount Rainier. University of Washington Publications Biology 7: 1-192. Seattle WA Literature
Jones, R.L., and P.S. White. 1981. The vascular flora of Shiloh National Military Park, Harding County, Tennessee. Research/Resources Management Report No. 50. USDI National Park Service, Atlanta TN 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
Lakela, O. 1965. A flora of northeastern Minnesota. University of Minnesota Press, Minneapolis MN Literature
Magee, D. Flora of New England. Unpublished and undated ME, NH, VT Literature
McAvoy, William. Personal communication DE Literature
McGregor, R.L., et al. 1986. Flora of the Great Plains. University of Kansas Press, Lawrence KS 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
Munz, P.A., and D.D. Keck. 1968. A California flora and supplement. University of California Press, Berkeley CA Literature
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
Oregon Flora Project species list; species noted on herbarium specimens. Unpublished and undated 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
Rhoads, A.F., and W.M. Klein, Jr. 1993. The vascular flora of Pennsylvania. Annotated checklist and atlas. American Philosophical Society, Philadelphia PA Literature
SOC. Specimen at Southern Oregon University, Ashland, Oregon, (http://www.sou.edu/Biology/Herbarium/Herbarium.htm). OR Specimen
Seymour, F.C. 1969. The flora of New England. Charles E. Tuttle Company, Rutland ME, NH, VT 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 at Eastern New Mexico University, Portales, New Mexico, (http://wwwstd.enmu.edu/pollockd/botany.html). NM Specimen
Strausbaugh, P.D., and E.L. Core. 1977. Flora of West Virginia, 2nd ed., 4 vols. West Virginia Bulletin, Morgantown WV 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
Taylor, R.J., and C.E.S. Taylor. 1989. An annotated list of the ferns, fern allies, gymnosperms and flowering plants of Oklahoma. Southeast Oklahoma State University OK Literature
Texas A&M Bioinformatics Working Group. Texas A&M Bioinformatics Working Group Internet site (http://csdl.tamu.edu/FLORA/output/outputa.html) TX 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
UNM. Specimen at University of New Mexico, Albuquerque, New Mexico, (http://www.msb.unm.edu/herbarium/). NM 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
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
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
Whetstone, R.D. 1981. Vascular flora and vegetation of the Cumberland Plateau of Alabama. Ph.D. Dissertation. University of North Carolina, Chapel Hill AL 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
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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