Ennos, Roland R., and L. Sheffield.Plant Life. Blackwell Science, 2000. A look at plants from an evolutionary perspective to show how the range of environments in the world has led to different flora.
Raven, Peter H., and others.Biology of Plants. Freeman, 1998. Illustrated introductory text.
Botany guides
Cvancara, Alan M.Edible Wild Plants and Herbs: A Pocket Guide. McGraw-Hill Professional, 2001. A concise guide that will enable the reader to identify and use 50 common plants and herbs.
Brown, Lauren.Grasses: An Identification Guide. Houghton Mifflin, 1992. Nontechnical approach to identification using color, shape, and plant texture.
Clark, Lynn G., and Richard W. Pohl.Agnes Chase's First Book of Grasses. Smithsonian, 1996. “The Structure of Grasses Explained for Beginners” (title page).
Darke, Rick, and Mark Griffiths, eds.Grasses. Timber, 1994. For the gardener, with information on plant cultivation, propagation, and culture, as well as descriptions.
Hitchcock, A. S., and Agnes Chase.Manual of the Grasses of the United States. Dover, 1971. Line drawings, identification keys, and descriptions to native and introduced grasses.