Along with the Ozark Mountains, the Ouachita Mountains form the US Interior Highlands, the only major mountainous region between the Rocky Mountains and the Appalachian Mountains. The Ouachita Mountains are fold mountains like the Appalachian Mountains to the east, and were originally part of that range. During the Pennsylvanian part of the Carboniferous period, about 300 million years ago, the coastline of the Gulf of Mexico ran through the central parts of Arkansas. -- Wikipedia

* * *

You can see on a map how the Mississippi Valley has bisected the former mountain mass that included the Ozarks and the Appalachians. So, it is no surprise that they share many of the same trees, and also, they have species unique to each. -- PLB
             ***********************************************
The BEE-L mailing list is powered by L-Soft's renowned
LISTSERV(R) list management software.  For more information, go to:
http://www.lsoft.com/LISTSERV-powered.html

Guidelines for posting to BEE-L can be found at:
http://honeybeeworld.com/bee-l/guidelines.htm