Floristics and Identification
American Botanical Council (reports on the science of plants as medicines)
Beneficial and Harmful Aquatic Plants of Texas handout
Botanical Research Institute of Texas (BRIT)
Guidance Notes for Recording DAFOR Scale (relative abundance of plants)
Illustrated Flora of East Texas
Integrated Taxonomic Information System (ITIS)
Kansas Wildflowers and Grasses
Lady Bird Johnson Wildflower Center
Native Plants of South Texas Herbarium (Uvalde Extension and Research Center)
Native Plants of Texas Search Engine
Noble Foundation - Plant Image Gallery
Robert W. Freckmann Herbarium (University of Wisconsin)
SEINet - Southwest Environmental Education Network
Tropicos® - Missouri Botanical Garden Databases
University of Texas Plant Resources Center
Vascular Plant Herbarium - University of Tennessee
Weed ID Guide - University of Missouri