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Asclepias L.
milkweed

Data Source

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

Data Documentation

Documentation State Type
1909. Torreya. DE Literature
1920. Torreya. OR Literature
1954. Annals of the Missouri Botanical Garden. AR, CA, CO, DC, DE, FL, GA, IA, IL, IN, LA, MA, MS, MT, ND, NE, NJ, NM, NY, OH, OK, PA, RI, SD, TN, UT, WI, WV Literature
1971. Bureau of Land Management report. Unpublished, on file at UC Davis Herbarium. CA Literature
1971. Michigan Botanist. WI Literature
1973. Castanea. MS Literature
1985. Wassman Journal of Biology. CA Literature
1989. Journal of the Arnold Arboretum. AL, MD Literature
1991. Transactions of the Nebraska Academy of Sciences. NE Literature
1992. Journal of the Arizona-Nevada Academy of Science. AZ Literature
1993. Journal of the Arizona-Nevada Academy of Science. AZ Literature
1994. Plant species list, Cosumnes River Preserve. Unpublished. CA Literature
1995. Rhodora. VT Literature
1998. New Mexico Naturalist's Notes. NM Literature
1999. University of Minnesota Herbarium: Vascular plant collection. MN Literature
2000. CalFlora: Information on California plants for education, research and conservation. The CalFlora Database, Berkeley. CA Literature
Abrams, L. 1960. An illustrated flora of the Pacific States. Stanford University Press, Stanford. CA, WA Literature
Anonymous. Personal communication to John Kartesz. CA, CO, DC, ID, IL, MN, MT, NV, OK, VT, WY Literature
Arizona Heritage Data Management System. AZ 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. 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
Barkworth, Mary E. Personal communication. DE, VA Literature
Beal, W.J. 1904. Michigan flora, A list of the ferns and seed plants growing without cultivation. State Board of Agriculture, Lansing. MI Literature
Belden, A., et al. 2004. Noteworthy collections: Virginia. Castanea 69: 144-153. VA 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, MB, NB, NS, ON, PE, QC, SK Literature
Brown, M.L., and R.G. Brown. 1984. Herbaceous plants of Maryland. Port City Press, Inc., Baltimore. 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
Buegge, J.J. Flora of the Santa Teresa Mountains in Graham County, Arizona. AZ Literature
CIC. Specimen at Albertson College of Idaho, Caldwell, Idaho. ID Specimen
CIC. Specimen at Albertson College of Idaho, Caldwell, Idaho. ID Specimen
CIC. Specimen at Albertson College of Idaho, Caldwell, Idaho. ID Specimen
CIC. Specimen at Albertson College of Idaho, Caldwell, Idaho. ID Specimen
California Native Plant Society. Inventory of rare and endangered plants. CA Literature
Campbell, J., and M. Medley. 2012. The atlas of vascular plants in Kentucky. 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
Checklist of the vascular plants of San Diego County, California. San Diego Natural History Museum, San Diego. CA 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
Clemants, Steven. Personal communication. NY Literature
Cooperrider, T.S. 1995. The Dicotyledoneae of Ohio. Part 2: Linaceae through Campanulaceae. Ohio State University Press, Columbus. OH Literature
Cronquist, A., A.H. Holmgren, N.H. Holmgren, J.L. Reveal, and P.K. Holmgren. 1972. Intermountain flora: Vascular plants of the Intermountain West. New York Botanical Garden, New York. AZ, CA, ID, MS, SD, UT, WA, WY 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. 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
Delaware Natural Heritage Program. DE Literature
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
Dorn, R.D. 2001. Vascular plants of Wyoming, 3rd ed. Mountain West Publishers, Cheyenne. WY 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
Doyon, D. 1959. Les aires geographiques actuelle et primitive d'Asclepias syriaca L. en Amerique. Rapport de la Société de Québec pour la Protection des Plantes 41: 43-68. OH, TX Literature
Duncan, W.H., and J.T. Kartesz. 1981. Vascular flora of Georgia. University of Georgia Press, Athens. GA Literature
Dunn, R.A., and S.M. Jones. 1981. Vascular plant species of limited distribution and abundance in South Carolina. Department of Forestry Technical Paper No. 13. Clemson University, Clemson. SC Literature
Eilers, L.J., and D.M. Roosa. 1991. The vascular plants of Iowa. University of Iowa Press, Iowa City. IA Literature
Fernald, M.L. 1950. Gray's manual of botany, 8th ed. American Book Company, New York. IA, MN, SC, SD Literature
Florida Natural Areas Inventory. FL Literature
Freyburger, B.W. 30 June 2007. Field observation validated by NPDC staff. NM Observation
Freyburger, B.W. 5 July 2005. Field observation validated by NPDC staff. NM Observation
George, G.G. 1992. A synonymized checklist of the plants found growing in Rhode Island. Rhode Island Wild Plant Society. RI Literature
Georgia Natural Heritage Program. GA Literature
Gleason, H.A. 1963. The New Britton and Brown illustrated flora of the northeastern United States and adjacent Canada. Hafner Publishing Co., Inc., New York. IN, ME Literature
Gleason, H.A., and A. Cronquist. 1991. Manual of vascular plants of the northeastern United States and adjacent Canada. New York Botanical Garden, New York. AZ 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
Griffin, J.R. 1975. Plants of the highest Santa Lucia and Diablo Range Peaks, California. Pacific Southwest Forest and Range Experiment Station Research Paper PSW-110. USDA Forest Service. CA Literature
Hagwood, Sheri. 12 May 1993. Field observation validated by NPDC staff. ID Observation
Hagwood, Sheri. 17 June 1993. Field observation validated by NPDC staff. ID Observation
Hagwood, Sheri. 26 August 1999. Field observation validated by NPDC staff. ID Observation
Hanlon, Christopher. June 2003. Field observation validated by NPDC staff. CA Observation
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 2013-29(29): 1-37. TX Literature
Hartman, R. 1992. Wyoming phytogeography. Unpublished. WY Literature
Hartman, R. Atlas of the vascular flora of Wyoming. Unpublished and undated. WY Literature
Hartman, R.L. 2001. A checklist of the vascular plants of Colorado. CO 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
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. AZ, NM 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, F., B. Ertter, A. Sanders, G. Leppig, and E. Dean. 2002. Catalog of non-native vascular plants occurring spontaneously in California beyond those addressed in The Jepson Manual. Part I. Madroño 49: 61-98. CA Literature
Hrusa, G.F. 1996. Report submitted to North State Resources Inc., Redding. Unpublished. CA Literature
Hrusa, G.F. 1997. Report submitted to North State Resources Inc., Redding. Unpublished, on file at California Department of Agriculture. CA Literature
Hubbard, J.R., and W.S. Judd. 2013. Floristics of Silver River State Park, Marion County, Florida. Rhodora 115: 250-280. FL Literature
ID. Specimen at University of Idaho, Moscow, Idaho. ID Specimen
ID. Specimen at University of Idaho, Moscow, Idaho. ID Specimen
ID. Specimen at University of Idaho, Moscow, Idaho. ID Specimen
IDS. Specimen at Idaho State University, Pocatello, Idaho. ID Specimen
IDS. Specimen at Idaho State University, Pocatello, Idaho. ID Specimen
IDS. Specimen at Idaho State University, Pocatello, Idaho. ID Specimen
Illinois Plant Information Network (ILPIN). IL Literature
Indiana Natural Heritage Data Center. 2013. Endangered, threatened, and rare vascular plants of Indiana (16 April 2013). Division of Nature Preserves, Indiana Department of Natural Resources, Indianapolis, IN. IN Literature
James, S.A., and C.T. Imada (eds.). 2007. Pacific Basin vascular plant checklist. Bernice Pauahi Bishop Museum, Honolulu. PW 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
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
Kaul, Robert. Personal communication. NE 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
Kral, R., et al. 2014. Alabama Plant Atlas [online: accessed on 25 July 2014]. University of Alabama, Livingston, AL. AL 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
Lee, R.D. 1999. New Mexico's invasive weeds. New Mexico State University, Las Cruces. NM 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
Maryland Wildlife and Heritage Service. 2010. Rare, Threatened and Endangered Plants. Maryland Department of Natural Resources, Annapolis, MD. MD Literature
Massey, A.B. 1961. Virginia Flora. Virginia Agricultural Experiment Station, Technical Bulletin 155. Blacksburg, VA. VA Literature
Maxwell, R.H.,and W.E. Thomas. 2003. Distribution records of southern Indiana vascular plants III. Proceedings of the Indiana Academy of Science 112: 22-28. IN Literature
McAvoy, William. Personal communication. DE Literature
McCook, Lucile M. Personal communication. MS 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. AR, KS, ND, NE, NM, OK, SD Literature
McGregor, R.L., et al. 1986. Flora of the Great Plains. University of Kansas Press, Lawrence. KS, OK, TX 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
Michigan Natural Features Inventory. MI Literature
Mississippi Natural Heritage Program. MS 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
Montana Natural Heritage Program. MT 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. NM Specimen
NMC. Specimen at New Mexico State University, Las Cruces, New Mexico. NM Specimen
NMC. Specimen at New Mexico State University, Las Cruces, New Mexico. NM Specimen
NMC. Specimen at New Mexico State University, Las Cruces, New Mexico. NM Specimen
NMC. Specimen at New Mexico State University, Las Cruces, New Mexico. NM Specimen
NMC. Specimen at New Mexico State University, Las Cruces, New Mexico. NM Specimen
NMC. Specimen at New Mexico State University, Las Cruces, New Mexico. NM Specimen
NMC. Specimen at New Mexico State University, Las Cruces, New Mexico. NM Specimen
NMC. Specimen at New Mexico State University, Las Cruces, New Mexico. NM Specimen
NMC. Specimen at New Mexico State University, Las Cruces, New Mexico. NM Specimen
NMC. Specimen at New Mexico State University, Las Cruces, New Mexico. NM Specimen
NMC. Specimen at New Mexico State University, Las Cruces, New Mexico. NM Specimen
Nebraska Department of Agriculture. 1979. Nebraska weeds. Nebraska Department of Agriculture, Lincoln. NE Literature
Nebraska Natural Heritage Program. NE Literature
New Jersey Natural Heritage Program. NJ Literature
New Mexico Natural Heritage Program. NM Literature
New York Flora Association. 1990. Preliminary vouchered atlas of New York State flora, ed. 1. New York State Museum Institute, Albany. NY Literature
New York Natural Heritage Program. NY Literature
Ohio Natural Heritage Database. OH 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
Peck, M.E. 1961. A manual of the higher plants of Oregon, 2nd ed. Oregon State University Press, Corvallis. OR Literature
Philley, Kevin Dwayne. 23 May 2007. Field observation validated by NPDC staff. MS Observation
Philley, Kevin Dwayne. 29 May 2007. Field observation validated by NPDC staff. MS Observation
Philley, Kevin Dwayne. 8 May 2007. Field observation validated by NPDC staff. MS Observation
Philley, Kevin Dwayne. 8 May 2007. Field observation validated by NPDC staff. MS Observation
Philley, Kevin Dwayne. 8 May 2007. Field observation validated by NPDC staff. MS Observation
Phytologia. UT Literature
Rader, Linda. Personal communication. WV Literature
Radford, A., et al. (eds.). Vascular flora of the southeastern United States. Unpublished and undated. AL, AR, FL, MD 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. MS, 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
Redmond, Steven. August 2007. Field observation validated by NPDC staff. GA Observation
Redmond, Steven. June 2007. Field observation validated by NPDC staff. GA Observation
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
Riser, J.P.,and C. Kline. 2007. Noteworthy collections. Arizona. Madroño 54: 203. AZ Literature
SRP. Specimen at Boise State University, Boise, Idaho. ID Specimen
SRP. Specimen at Boise State University, Boise, Idaho. ID Specimen
SRP. Specimen at Boise State University, Boise, Idaho. ID Specimen
SRP. Specimen at Boise State University, Boise, Idaho. ID Specimen
Schotz, A. 2009. Noteworthy collections: Alabama. Castanea 74: 185-188. AL Literature
Schotz, Al. Personal communication. AL Literature
Seymour, F.C. 1969. The flora of New England. Charles E. Tuttle Company, Rutland. NH Literature
Sharp, A.J., R.E. Shanks, J.K. Underwood, and E. McGilliard. 1960. A preliminary checklist of monocots in Tennessee. Published by authors, University of Tennessee, Knoxville. TN 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). CA Literature
Specimen at Eastern New Mexico University, Portales, New Mexico. NM Specimen
Specimen at Eastern New Mexico University, Portales, New Mexico. NM Specimen
Specimen at Eastern New Mexico University, Portales, New Mexico. NM Specimen
Stebbins, J.C., and B.E. Valentine. 1990. Consultant inventory. Biological reconnaissance ... at the community of Fish Camp, Mariposa County. Unpublished. CA Literature
Strausbaugh, P.D., and E.L. Core. 1977. Flora of West Virginia, 2nd ed., 4 vols. West Virginia Bulletin, Morgantown. WV Literature
TEX. Specimen at University of Texas at Austin, Austin, Texas. TX Specimen
TEX. Specimen at University of Texas at Austin, Austin, Texas. TX Specimen
TEX. Specimen at University of Texas at Austin, Austin, Texas. TX Specimen
TEX. Specimen at University of Texas at Austin, Austin, Texas. TX Specimen
TEX. Specimen at University of Texas at Austin, Austin, Texas. TX Specimen
TEX. Specimen at University of Texas at Austin, Austin, Texas. TX Specimen
TEX. Specimen at University of Texas at Austin, Austin, Texas. TX Specimen
Tatnall, E. 1860. Catalogue of the phaenogamous and filicoid plants of New Castle County, Delaware. Wilmington Institute, Wilmington. 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. TX Literature
Texas Biological and Conservation Data System. 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
Thomas, W.E.,and R.H. Maxwell. 2009. Distribution records of southern Indiana vascular plants III. Proceedings of the Indiana Academy of Science 118: 31-38. IN 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. NM Specimen
UNM. Specimen at University of New Mexico, Albuquerque, New Mexico. NM Specimen
UNM. Specimen at University of New Mexico, Albuquerque, New Mexico. NM Specimen
UNM. Specimen at University of New Mexico, Albuquerque, New Mexico. NM Specimen
UNM. Specimen at University of New Mexico, Albuquerque, New Mexico. NM Specimen
UNM. Specimen at University of New Mexico, Albuquerque, New Mexico. NM Specimen
UNM. Specimen at University of New Mexico, Albuquerque, New Mexico. NM Specimen
UNM. Specimen at University of New Mexico, Albuquerque, New Mexico. NM Specimen
UNM. Specimen at University of New Mexico, Albuquerque, New Mexico. NM Specimen
UNM. Specimen at University of New Mexico, Albuquerque, New Mexico. NM Specimen
UNM. Specimen at University of New Mexico, Albuquerque, New Mexico. NM Specimen
UNM. Specimen at University of New Mexico, Albuquerque, New Mexico. NM Specimen
UNM. Specimen at University of New Mexico, Albuquerque, New Mexico. NM Specimen
UNM. Specimen at University of New Mexico, Albuquerque, New Mexico. NM Specimen
UNM. Specimen at University of New Mexico, Albuquerque, New Mexico. NM Specimen
UNM. Specimen at University of New Mexico, Albuquerque, New Mexico. NM Specimen
UNM. Specimen at University of New Mexico, Albuquerque, New Mexico. NM Specimen
UNM. Specimen at University of New Mexico, Albuquerque, New Mexico. NM Specimen
UNM. Specimen at University of New Mexico, Albuquerque, New Mexico. NM Specimen
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WS. Specimen at Washington State University, Pullman, Washington. WA Specimen
WS. Specimen at Washington State University, Pullman, Washington. WA Specimen
WTU. Specimen at University of Washington, Seattle, Washington. 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
Weakley, A.S. 1996. Flora of the Carolinas and Virginia. Unpublished. SC Literature
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Weishaupt, C.G. 1971. Vascular plants of Ohio. Kendall/Hunt Publishing Co., Dubuque. OH 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
Wilhelm, G.S. 1984. Vascular flora of the Pensacola Region. Ph.D. Dissertation. Southern Illinois University, Carbondale. AL Literature
Wilken, Dieter. Personal communication. CA Literature
Wisconsin Natural Heritage Program. WI Literature
Wisconsin vascular plants. 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
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Wyoming Natural Diversity Database. WY 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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