A Field Guide to Trees and Shrubs. 2nd edition. 1986. George A. Petrides. (Peterson Field Guide Series) Houghton Mifflin company.

A Field Guide to the Trees and Shrubs of the Southern Appalachians. 1994. R.E. Swanson Johns Hopkins University Press.

A Guide to the Wildflowers of South Carolina. 2002. Richard D. Porcher and Douglas A. Rayner. University of South Carolina Press.

Appalachian Wildflowers. 2000. Thomas E. Hemmerly. University of Georgia Press.

All About Tennessee Wildflowers. 1999. Sweetwater Press.

Aquatic and Wetland Plants of the Southeastern United States, Monocotyledons. 1979. Robert K. Godfrey and J.W. Wooten. University of Georgia Press.

Aquatic and Wetland Plants of the Southeastern United States, Dicotyledons. 1981. Robert K. Godfrey and J.W. Wooten. University of Georgia Press.

Atlantic Coastal Plain Wildflowers. 2006. Gil. Nelson. Falcon Press.

Autumn Leaves and Winter Berries in Arkansas. 2000. Carl G. Hunter. Ozark Society Foundation.

East Gulf Coastal Plain Wildflowers. 2005. Gil. Nelson. Falcon Guide; Globe Pequot Press.

Ferns of Florida: A Reference and Field Guide. 2000. Gil Nelson. Pineapple Press.

Ferns of the Smokies. 2005. M. Evans. Great Smoky Mountains Association.

Field Guide to Coastal Wetland Plants of the Southeastern United States. 1993. Ralph W. Tiner. University of Massachusetts Press.

Field Guide to the Ferns and other Pteridophytes of Georgia. 1986. L.H. Snyder, Jr. & J.G. Bruce. University of GA Press.

Field Guide to the Rare Plants of Florida. 2000. Linda G. Chafin. Florida Natural Areas Inventory.

Flora of North America North of Mexico [online]. Flora of North America Editorial Committee, eds. 1993+. 16+ vols. New York and Oxford. Vol. 1, 1993; vol. 2, 1993; vol. 3, 1997; vol. 4, 2003; vol. 5, 2005; vol. 7, 2010; vol. 8, 2009; vol. 19, 2006; vol. 20, 2006; vol. 21, 2006; vol. 22, 2000; vol. 23, 2002; vol. 24, 2007; vol. 25, 2003; vol. 26, 2002; vol. 27, 2007. Flora of North America website.

Flora of Virginia. 2012. C. Ritchie Bell and Bryan J. Taylor. Foundation of the Flora of Virginia Project Inc. and Botanical Research Institute of Texas Press.

Florida Wildflowers and Roadside Plants. 1982. Alan S. Weakley, J. Christopher Ludwig, and John F. Townsend. Laurel Hill Press.

Florida Wildflowers in Their Natural Communities. 1999. Walter Kingsley Taylor. University Press of Florida.

Grasses of Louisiana. 3rd Edition. 2004. Charles M. Allen, D.A. Newman and H. Winters. 2004. Allen’s Native Ventures.

Guide to Florida Wildflowers. 1992. Walter Kingsley Taylor. Taylor Trade Publishing.

Guide to the Vascular Plants of Florida. Third Edition. 2011. Richard P. Wunderlin and Bruce F. Hansen. University Press of Florida.

Guide to the Trees, Shrubs, and Woody Vines of Tennessee. 2002 B.E. Wofford & E.W. Chester. University of TN Press.

Guide to the Vascular Plants of the Blue Ridge. 1989. B.E Wofford. University of GA Press.

Illustrated Flora of East Texas. Volume 1. 2006. George M. Diggs, B.L. Lipscomb, M.D. Reed, and R.J. O’Kennon.

Keys to the Flora of Arkansas. 1994. Edwin B. Smith. University of Arkansas Press.

Manual of the Vascular Flora of the Carolinas. 1968. Albert E. Radford, H.E. Ahles, C.R. Bell. University North Carolina Press.

Native Orchids of the Southern Appalachian Mountains. 2000. S. Bentley. University of North Carolina Press.

Native Shrubs and Woody Vines of the Southeast. 1989. by Leonard E. Foote & Samuel B. Jones. Timber Press

Plant Life of Kentucky: An Illustrated guide to the Vascular Flora. 2005. by Ronald L. Jones. University of Kentucky Press.

Rare Wildflowers of Kentucky. 2008. Thomas G. Barnes, Deborah White and Marc Evans. University of Kentucky Press.

Shinner’s & Mahler’s Illustrated Flora of Texas. 1999. George M. Diggs, B.L. Lipscomb, and R.J. O’Kennon. Botanical Research Institute of Texas.

Shrubs and Woody Vines of Florida: A Reference and Field Guide. 1996. Gil Nelson. Pineapple Press.

Southern Appalachian Wildflowers (A Falcon Guide). 2002. B. Medina & V. Medina. The Globe Pequot Press.

Texas Range Plants. 1993. Stephan L. Hatch and Jennifer Pluhar. Texas A&M University Press.

Texas Wildflowers, A Field Guide. 2002. Campbell Loughmiller and Lynn Loughmiller. University of Texas Press.

Trees of Florida: A Reference and Field guide. 1998. Gil Nelson. Pineapple Press.

Trees of the Southeastern United States. 1998. W.H. Duncan and M.B. Duncan. University of Georgia Press.

Trees, Shrubs, & Vines of Arkansas. 3rd ed. 2004 by Carl G. Hunter. Ozark Society Foundation.

Trees, Shrubs, and Woody Vines of East Texas. 2nd edition. 2000. Cunningham Productions.

Wild Orchids of Florida. 2nd ed.. 2006. Paul Martin Brown. University Press of Florida.

Wild Orchids of Texas. 1999. Joe Liggio and Ann Orto Liggio. University of Texas Press.

Wildflowers and Ferns of Kentucky. 2004. Thomas G. Barnes and S. Wilson Francis. The University Press of Kentucky.

Wildflowers of Arkansas. 1984. by Carl G. Hunter. Ozark Society Foundation

Wildflowers of Houston and Southeast Texas. 1993. John Teveten and Gloria Teveten. University of Texas Press.

Wildflowers of Louisiana. 1972. Clair A. Brown. Louisiana State University Press.

Wildflowers of Mississippi. 2007. By Stephen L. Timme. University Press of Mississippi.

Wildflowers of North Carolina. 2nd edition. C. Ritchie Bell, William S. Justice, and Anne Lindsey. University of North Carolina Press.

Wildflowers of Tennessee. 2001. J.B Carman. Highland Rim Press.

Wildflowers of Tennessee, the Ohio Valley and the Southern Appalachians. 2005. D. Horn & T. Cathcart. Lone Star Publishing.

Wildflowers of Texas. 2003. Geyata Ajilvsgi. Shearer Publishing.

Wildflowers of the Appalachian Trail. 2nd ed. 2006. Leonard Adkins. Menasha Ridge Press.

Wildflowers of the Big Thicket, East Texas and Louisiana. 1979. Geyata Ajilvsgi. Texas A&M University Press.

Wildflowers of the Blue Ridge and Great Smoky Mountains. 2005. Leonard Adkins. Menasha Ridge Press.

Wildflowers of the Eastern United States. 1999. Wilbur H. Duncan and Marion B. Duncan. University of Georgia Press.

Wildflowers of the Southern Mountains. 1998. R.M. Smith. University of TN Press.

Wildflowers of the Texas Hill Country. 1987. Marshall Enquist. Lone Star Botanical.

Wildflowers, Trees, and Shrubs of Texas. Revised edition. 1999. Delena Tull and George O. Miller. 1999. Gulf Publishing Company.