Allerton Park - University of Illinois

Allerton Park consists of about 1,500 acres of natural areas. The Illinois Natural Areas Inventory (INAI) surveyed Allerton Park in 1976 and 2008 documenting 470 acres of very high (old growth and second old growth) and high (old growth and second old growth; grazed) quality forest on the site. This is the largest area of high-quality forest in the Grand Prairie Natural Division (White, 1978). Allerton Park holds INAI category designations of I (high quality natural communities) and II (specific suitable habitat for endangered or threatened species). Dominant tree species at Allerton Park include white, black, northern red, and bur oak, shagbark, shellbark, mockernut and bitternut hickory hackberry, silver maple, and American sycamore.

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