Calkins' flora of Chicago and vicinity comprised about 440,000 hectares of land that included natural features such as morainal deposits of clay and gravel and dolomite outcroppings, as well as woodland and prairie habitats--all of which are found at the JMTA today.
Nine species of lichens (Caloplaca species #1, #2 and #3 sensu JMTA study, Caloplaca cf.
Nearly 2/3 of all lichens known from Will County were found in this study indicating that lichens are a key componant of the JMTA ecosystem.
Any attempt by land managers to restore the JMTA to prairie would require the removal of this tree.
I would like to thank JMTA Biologist Randy Berry and the rest of the JMTA staff for their cooperation in this study.
Caloplaca species #1 sensu JMTA study Rare on granite (#1875).