Notes on ranges are included. About 20 species have broad 
east-west distribution, and 4 of these range northwest to Alaska. 
Northern species found near sea level in the North rise to higher 
altitudes southward and reach their southern limits in the Southern 
Appalachians. Southern species of the Gulf and Atlantic Coastal 
Plains extend northward along the Atlantic coast or inland up the 
14 
Mississippi Valley. 
Rare, local, and endangered species are listed. As mapped, 23 
species of minor eastern hardwoods have relatively small range in the 
United States. One of these is classed as extinct except in 
cultivation, 3 are classed as endangered, and 9 are designated 
threatened. 
