References for Scientific Illustrators

Botany

A National Audubon Society field guide to eastern North American wildflowers, with flowers on the cover.

National Audubon Society Field Guide to North American Wildflowers : Eastern Region
by John W. Thieret, William A. Niering, Nancy C. Olmstead

A National Audubon Society field guide to western North American wildflowers, with flowers on the cover.

National Audubon Society Field Guide to North American Wildflowers : Western Region
by Richard Spellenberg

A National Audubon Society field guide to eastern North American trees, with flowers and fruit on the cover.

The National Audubon Society Field Guide to North American Trees : Eastern Region
by Elbert Luther Little, Elbert L. Little Jr., Angelo Lomeo (Photographer), Sonja Bullaty (Photographer)

A National Audubon Society field guide to western North American trees, with flowers and cones on the cover.

National Audubon Society Field Guide to North American Trees : Western Region
by Elbert L., Jr. Little, Angelo Lomeo (Photographer)

A National Audubon Society field guide to North American mushrooms, with mushrooms on the cover.

National Audubon Society Field Guide to North American Mushrooms
by Gary A. Lincoff, Gary H. Lincoff

Web Sites:

Online Image Databases Plants

Tree of Life Web Project, provides scientific name for species

Google Image Search, searchable database of images