The following bibliography has been generated by bringing together all references provided by our content partners. There may be duplication.

References

• Abrams, L. & R. S. Ferris. 1960. Bignonias to Sunflowers. 4: 732 pp. In L. Abrams Ill. Fl. Pacific States. Stanford University Press, Stanford.
• Aeschimann, D. & C. Heitz. 2005. Synonymie-Index der Schweizer Flora und der angrenzenden Gebiete (SISF). 2te Auflage. Documenta Floristicae Helvetiae N° 2. Genève.
• Anonymous. 1986. List-Based Rec., Soil Conserv. Serv., U.S.D.A. Database of the U.S.D.A., Beltsville.
• Correll, D. S. & M. C. Johnston. 1970. Man. Vasc. Pl. Texas i–xv, 1–1881. The University of Texas at Dallas, Richardson.
• Cronquist, A. J. 1980. Asteraceae. 1: i–xv, 1–261. In Vasc. Fl. S.E. U. S. The University of North Carolina Press, Chapel Hill.
• Cronquist, A. J. 1994. Vascular plants of the intermountain west, U.S.A. 5: 1–496. In A. J. Cronquist, A. H. Holmgren, N. H. Holmgren, J. L. Reveal & P. K. Holmgren (eds.) Intermount. Fl. Hafner Pub. Co., New York.
• Fernald, M. 1950. Manual (ed. 8) i–lxiv, 1–1632. American Book Co., New York.
• Flann C. (ed) (2013). GCC: Global Compositae Checklist (version 3 (Beta), Feb 2012). In: Species 2000 & ITIS Catalogue of Life, 11th March 2013 (Roskov Y., Kunze T., Paglinawan L., Orrell T., Nicolson D., Culham A., Bailly N., Kirk P., Bourgoin T., Baillargeon G., Hernandez F., De Wever A., eds). Digital resource at www.catalogueoflife.org/col/. Species 2000: Reading, UK.
• Flora of China Editorial Committee. 1988-2013. Fl. China Unpaginated. Science Press & Missouri Botanical Garden Press, Beijing & St. Louis.
• Flora of China Editorial Committee. 2011. Fl. China 20–21: 1–992. Science Press & Missouri Botanical Garden Press, Beijing & St. Louis.
• Flora of North America Editorial Committee, e. 2006. Magnoliophyta: Asteridae, part 8: Asteraceae, part 3. 21: i–xxii + 1–616. In Fl. N. Amer. Oxford University Press, New York.
• Gleason, H. A. & A. J. Cronquist. 1991. Man. Vasc. Pl. N.E. U.S. (ed. 2) i–910. New York Botanical Garden, Bronx.
• Gleason, H. A. 1968. The Sympetalous Dicotyledoneae. vol. 3. 596 pp. In H. A. Gleason Ill. Fl. N. U.S. (ed. 3). New York Botanical Garden, New York.
• Godfrey, R. K. & J. W. Wooten. 1981. Aquatic Wetland Pl. S.E. U.S. Dicot. 933 pp. Univ. Georgia Press, Athens.
• Great Plains Flora Association. 1986. Fl. Great Plains i–vii, 1–1392. University Press of Kansas, Lawrence.
• Hickman, J. C. 1993. Jepson Man.: Higher Pl. Calif. i–xvii, 1–1400. University of California Press, Berkeley.
• Hilty, J. Editor. 2013. Illinois Wildflowers. World Wide Web electronic publication. flowervisitors.info, version 04/2013.
  See: Botanical Terminology and Line Drawings,  Ecological Terminology,  Website Description,  Links to Other Websites,  Reference Materials
• Hilty, J. Editor. 2013. Insect Visitors of Illinois Wildflowers.   World Wide Web electronic publication. illinoiswildflowers.info, version (05/2013)  
  See:   Abbreviations for Insect Activities,   Abbreviations for Scientific Observers,   References for behavioral observations
• Hitchcock, C. H., A. J. Cronquist, F. M. Ownbey & J. W. Thompson. 1984. Compositae. Part V.: 1–343. In Vasc. Pl. Pacific N.W. University of Washington Press, Seattle.
• Hultén, E. 1968. Fl. Alaska i–xxi, 1–1008. Stanford University Press, Stanford.
• Image metadata at Bioimages (http://bioimages.vanderbilt.edu/)
• Moss, E. H. 1983. Fl. Alberta (ed. 2) i–xii, 1–687. University of Toronto Press, Toronto.
• Munz, P. A. & D. D. Keck. 1959. Cal. Fl. 1–1681. University of California Press, Berkeley.
• Munz, P. A. 1974. Fl. S. Calif. 1–1086. University of California Press, Berkeley.
• Radford, A. E., H. E. Ahles & C. R. Bell. 1968. Man. Vasc. Fl. Carolinas i–lxi, 1–1183. University of North Carolina Press, Chapel Hill.
• Schwegman, J. E. 1991. The Vascular Flora of Langham Island, Kankakee County, Illinois. Erigenia 11: 1–8.
• Scoggan, H. J. 1979. Dicotyledoneae (Loasaceae to Compositae). Part 4. 1117–1711 pp. In Fl. Canada. National Museums of Canada, Ottawa.
• Small, J. K. 1933. Man. S.E. Fl. i–xxii, 1–1554. Published by the Author, New York.
• Welsh, S. L. 1974. Anderson's Fl. Alaska Adj. Parts Canada i–xvi, 1–724. Brigham Young University Press, Provo.
• Wunderlin, R. P. 1998. Guide Vasc. Pl. Florida i–x, 1–806. University Press of Florida, Gainseville.