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

References

  • 1996. database, The PLANTS Database
  • 2000. database, The PLANTS Database
  • Aeschimann, D. & C. Heitz. 2005. Synonymie-Index der Schweizer Flora und der angrenzenden Gebiete (SISF). 2te Auflage. Documenta Floristicae Helvetiae N° 2. Genève.   http://www.crsf.ch/ External link.
  • Aeschimann, D. & H. M. Burdet (2005). Flore de la Suisse et des territoires limitrophes. Le Nouveau Binz. Ed. 3. Haupt, Berne.
  • Fernald, M. 1950. Manual (ed. 8) i–lxiv, 1–1632. American Book Co., 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.
  • Godfrey, R. K. & J. W. Wooten. 1981. Aquatic Wetland Pl. S.E. U.S. Dicot. 1–944. Univ. Georgia Press, Athens.
  • Hilty, J. Editor. 2014. Illinois Wildflowers. World Wide Web electronic publication. flowervisitors.info, version 06/2014.
    See: Botanical Terminology and Line DrawingsEcological TerminologyWebsite DescriptionLinks to Other WebsitesReference Materials
  • Hilty, J. Editor. 2014. Insect Visitors of Illinois Wildflowers.  World Wide Web electronic publication. illinoiswildflowers.info, version (07/2014) 
    See:   Abbreviations for Insect ActivitiesAbbreviations for Scientific ObserversReferences for behavioral observations
  • Hortus Kewensis; or, a catalogue . . . 3: 288. 1789. (Hort. Kew.)
  • Lauber, K. & G. Wagner (2001). Flora Helvetica. Ed. 3. Haupt, Bern.
  • McKinney, L. E. & N. H. Russell. 2002. Violaceae of the Southestern United States. Castanea 67(4): 369–379.
  • Orrell T. (custodian) (2013). ITIS Regional: The Integrated Taxonomic Information System (version Apr 2011). 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.
  • 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.
  • Rhodora 15(174): 112–113. 1913. (Rhodora)
  • Small, J. K. 1933. Man. S.E. Fl. i–xxii, 1–1554. Published by the Author, New York.
  • Violaceae of North America Update

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