Illinois Wildflowers

Trees of Illinois

Trees of Illinois Field Guide (Tree Identification Guides)

Newcomb's Wildflower Guide

Tallgrass Prairie Wildflowers: A Field Guide to Common Wildflowers and Plants of the Prairie Midwest, 2nd Edition

Birds of Indiana Field Guide

Wetland Plants of Illinois: A Complete Guide to the Wetland and Aquatic Plants of the Prairie State

Wildflowers of Illinois Woodlands

Exploring Nature in Illinois: A Field Guide to the Prairie State

Prairie Plants of the University of Wisconsin-Madison Arboretum: Including Horsetails, Ferns, Rushes, Sedges, Grasses, Shrubs, Vines, Weeds, and Wildflowers

Illinois Trees & Wildflowers: A Folding Pocket Guide to Familiar Species (Pocket Naturalist Guide Series)