Information About Conservation Plant Characteristics in the PLANTS Database the USDA Natural Resources Conservation Services, over 100 characteristics of 2,500 plants, accessible by common or scientific name. Also available are definitions of these characteristics. http://plants.usda.gov/characteristics.html (Added: Mon Jan 28 2002)
Vegetative Characters Skip down to leaf arrangement, simple and compound leaves, venation, lobing, leaf shapes, apices and bases, and margins. http://www.csdl.tamu.edu/FLORA/tfplab/vegchar.htm (Added: Tue Feb 12 2002)