Alabamaplants.com http://www.alabamaplants.com/index.html - Images, information and county distribution of Alabama plants searchable by flower color and leaf arrangement. Site being developed by Dan Tenaglia, author of Missouriplants.com.
The Alabama Natural Heritage Program http://www.alnhp.org/
Alabama Wildflower Society http://www.alwildflowers.org/
Dauphin Island Plant Website https://ww2.odu.edu/~rbray/dauphin/
Potamogetonaceae of Alabama http://floraofalabama.org/Family.aspx?id=153 - Keys, descriptions, photographs, and distribution maps
Southeast exotic plant pest council http://se-eppc.org/ - Link to Alabama chapter
Gibbons W., R. R. Haynes, and J. L. Thomas. 1990. Poisonous plants and venomous animals of Alabama and Adjoining States. U. of Alabama Press, Tuscaloosa, AL. 345 pp.
Harper, R. 1913. Economic Botany of Alabama, part 1: Geographical report, including descriptions of the natural divisions of the state, their forests and forest industries, with quantitative analyses and statistical tables. Geol. Surv. Alabama Monogr. 8. 222 pp.
Harper, R. 1928. Economic Botany of Alabama, part 2: Catalogue of the trees, shrubs and vines of Alabama, with their economic properties and local distribution. Geol. Surv. Alabama Monogr. 9. 357 pp.
Harper, R. 1943. Forests of Alabama. Geol. Surv. Alabama Monogr. 10. 230 pp.
Harper, R. 1944. Preliminary Report on the Weeds of Alabama. Geol. Surv. Alabama Bull. 53. 275 pp.
Kral, R. 1973. Some notes on the flora of the southern states, particularly Alabama and middle Tennessee. Rhodora 75: 366-410.
Mohr, C. 1901. Plant life of Alabama. Contributions from the U. S. National Herbarium v. 6 – The most recent flora of Alabama
Godfrey, R. K. 1988. Trees, shrubs, and woody vines of northern Florida and adjacent Georgia and Alabama. U. of Georgia Press, Athens, GA. 734 pp.
Picture Guides and Specialty Books
Dean, B. E., A. Mason, & J. L. Thomas. 1973. Wildflowers of Alabama and adjoining states. U. of Alabama Press, Tuscaloosa, AL. 230 pp.
Midgley, J. W. 1999. All about Alabama Wildflowers: Your complete guide to plant communities, identification, cultivation, and traditional uses. Sweet Water Press. 298 pp.