New England Wildflower Society's Go Botany

Plant Ecology and Monitoring Vegetation 

Barbour, M.G., J.H. Burk, W.D. Pitts, F.S. Gilliam, and M.W. Schwartz. 1999.Terrestrial Plant Ecology, 3rd Ed. Benjamin Cummings Publishing Co., Menlo Park, CA.

Plant Field Guides 

Cobb, B., E. J. Farnsworth, and C. Lowe. 2005. Peterson Field Guide to the Ferns of Northeastern and Central North America.Houghton-Miflin Company, Boston, Massachusetts

Newcomb, L. 1977. Newcomb’s Wildflower Guide. Illustrated by Gordon Morrison. Little Brown, Boston.

Petrides G.A. 1972. A Field Guide to Trees and Shrubs. 2nd Ed. Peterson Field Guides.  Houghton-Miflin Company, Boston, Massachusetts

Sibley, D.A. 2009. The Sibley Guide to Trees. Alfred Knopf Inc.