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

References

• 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.
• Flora of North America @ eFloras.org
• Flora of North America Editorial Committee, e. 2006. Magnoliophyta: Asteridae, part 6: Asteraceae, part 1. 19: i–xxiv. In Fl. N. Amer. Oxford University Press, New York.
• Gleason, H. A. & A. Cronquist. 1991. Man. Vasc. Pl. N.E. U.S. (ed. 2) i–lxxv, 1–910. 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.
• 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.
• Wunderlin, R. P. 1998. Guide Vasc. Pl. Florida i–x + 1–806. University Press of Florida, Gainseville.