lo North American Forests and Forestry 



Illinois the list becomes so long that it would fill 

 several pages of this volume. Here and in the 

 region of North Carolina the eastern forest reaches 

 its greatest development so far as diversity of trees 

 is concerned. Farther south, the coniferous trees, 

 especially the different kinds of pine, again become 

 more prominent, as they were towards the border 

 of British America. The southernmost end of the 

 region, the extreme southern part of Florida, with 

 the adjoining islands or " keys," takes on a different 

 character, many varieties properly belonging with 

 the typical West Indian species. The most dis- 

 tinguishing feature of the whole region, excepting 

 the arctic edge, is the prevalence of broad-leaved 

 trees. Over very wide areas not a coniferous tree 

 can be seen, unless it be the arbor-vitae {Thuja 

 occidentalis) and tamarack {Larix laricina) of the 

 swamps. Elsewhere broad-leaved and coniferous 

 trees grow mingled together, with broad-leaved 

 ones holding the decided majority ; while, to be sure, 

 there are also large areas where the pines and their 

 congeners exclude their broad-leaved rivals almost 

 altogether. 



But in the other two forest zones, the Rocky 

 Mountain and the Pacific, the coniferous or ever- 

 green trees have almost a monopoly. Not as if 

 there were no broad-leaved species in those sec- 

 tions. There are many, oaks, maples, poplars, and 

 others. But they form little scattered groves here 

 and there, or crouch in the ravines of the mountain 

 streams, without impressing themselves upon the 



