An online, searchable, version of the book Vascular Plant Systemics by Albert E. Radford, William C. Dickison, Jimmy R. Massey, and C. Ritchie Bell. This is a great resource for finding the meaning of botanical terms and illustrations of plant shapes and structures.
USDA is a good site for finding out where a particular plant will grow and its native region. Find out if a particular plant will grow in your gardening zone. There are also fact sheets for about 1000 plants. The database is searchable with either the scientific name or common name.
The 2012 USDA Plant Hardiness Zone Map is the standard by which gardeners and growers can determine which plants are most likely to thrive at a location. The map is interactive … click on your state for an enlarged view.
A joint effort by the Institute for Systematic Botany, the University of South Florida and the Florida Center for Community Design + Research to provide users with a comprehensive searchable database of vascular plants in the State of Florida.
A wonderful resource for native plant nurseries in your area. Their database is searchable by county, zip code or plant name. Growing, planting and promoting Florida native plants for sustainable landscapes.
The Butterflies and Moths of North America project is ambitious effort to collect and provide access to quality-controlled data about butterflies and moths for the continent of North America from Panama to Canada. Cerambycidae of FloridaA great resource to help identify longhorn beetles of Florida.
The "Goal" of the Federation is to be the leader in promoting, through education and political action, the conservation, restoration, sound management, and wise and ethical use of Florida's natural resources, to the end that present and future Floridians may live, work and pursue traditional outdoor activities in an outstanding natural environment.