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  1. Illinois DNR
  2. Conservation
  3. Forestry Resources
  4. Urban and Community Forestry

Technical Resources-Tree and Fungi Identification


 ​Tree Identification

Illinois Based Tree Identification Sites:

Chicago Botanic Gardens-Illinois' Best Plants

University of Illinois UI Plants


Tree Identification Links from Other States 

University of Connecticut's Plant Index

Iowa State University's Interactive Key

Ohio Division of Forestry “What Tree is it?

Oregon State University's Trees of the Pacific Northwest.  This site has a mystery tree challenge good for a home schooling exercise in using a tree identification key.


National Plant Databases 

Arbor Day Foundation’s On-Line step-by-step “What Tree is That?

Silvics of North America 

National Plants Database


Mobile Phone App

LEAFSNAP free mobile phone app using visual recognition to help identify tree species from photographs of their leaves.   The app was developed by researchers from Columbia University, the University of Maryland and the Smithsonian Institution.



Fungi Identification



USDA Field Guide Common Macrofungi in Eastern Forests and Their Ecosystem Functions