216 ILLINOIS ACADEMY OF SCIENCE 



secrotina, Carya ovata, Acer saccliarum, Populus del- 

 toides, Tilia mnericana, and Quercus alba, in the upper 

 ellipsoidalis, Quercus macrocarpa, Carya cordiformis, 

 Crataegus (sp.), Prunus americana, Prunus nigra, and 

 Pyrus coronaria in the lower stratum. The shrubs occur- 

 ring here were Hamamelis virginiana, Samlmcus cana- 

 densis, Evonymus atropurpureus, Virhurnum lentago, Yi- 

 hurnum acerifolium, Cornus stolonifera, Cornus panicul- 

 ata, Rihes cynoshati, Ribes floridutn, and Corylus ameri- 

 cana. Among the vines present were Yitis (sp.), Smilax 

 liispida, Celastrus scandens, Lonicera Glaiicescens. Quer- 

 cus ellipsoidalis, although variable in the abundance in 

 which it occurs, w^as the most characteristic tree of this 

 association. In places it formed pure stands. The tree in 

 Fig. 4 is a specimen of Quercus ellipsoidalis, var. coro- 

 naria. 



The stand of trees in X. T, 1, C was quite dense. Quer- 

 cus ellipsoidalis, Quercus rubra and Ostrya virginiana 

 were the dominant trees here. Other trees were Juglans 

 nigra, Carya cordiformis, Tilia americana, and Franoinus 

 americana. There were very few specimens of shrubs in 

 the undergrowth. Sambucus canadensis was the most 

 abundant shrub. A few specimens of Rubus occidentalis, 

 and Yirburnum ascerifolium, and but one specimen of 

 Evonymus atropurpurea were found. The herbaceous 

 undergrowth represented a high type of mesophytism. 

 Osmorhiza (sp.), and Hepatica acutiloba were taken as the 

 mesophytic indicators. 



The entire forest in N. T. 1, C had been cut over. It 

 seemed obvious that only the larger trees in N. T. 1, 12 

 had been cut out, for trees from eight to twelve inches in 

 diameter were abundant. The smaller trees of from two 

 to six inches in diameter were of the upland mesophytic 

 type. This upland type was represented by Quercus alba, 

 Carya ovata, and Acer saccliarum. Except for these lat- 

 ter trees the forest was not reproducing itself. 



The forest in N. T. 1, 11 had evidently been more re- 

 cently and more thoroughly cut over. Aside from a very 

 few trees which were from eight to sixteen inches in diam- 

 eter, the trees were only from one to six inches in diam- 

 eter. 



