Winter, Morton Arboretum, DuPage County, IllinoisSpring & Summer, Morton Arboretum, DuPage County, IllinoisAutumn, Morton Arboretum, DuPage County, IllinoisIllinois Canyon, Starved Rock State Park, IllinoisLaSalle Canyon, Starved Rock State Park, IllinoisOther Starved Rock State Park, IllinoisMatthiessen State Park, IllinoisOther Illinois LandscapesDuPage County, Illinois Forest Preserves (Etc.)Illinois FloraMidewin National Tallgrass Prairie, Illinois:  Flora & Details