192 Journal of the Mitchell Society [March 



Oxylophytic associations. 



Chestnut with laurel, qualities 4 and 5. 



Rhododendron catawhiense. 

 Selophytic associations. 



Ecd maple — black gum — greeu ash — alder. 



For most of the forest types listed the quality sites are g-iven, the 

 quality of the site beino- indicated by the dominant trees in the super- 

 ior stand havino- the general range of heights as follows : 



Quality super 1 140 feet and over 



Quality 1 125-139 feet 



Quality 2 100-124 feet 



Quality 3 75-99 feet (average) 



Quality 4 50-74 feet 



Quality 5 25-49 feet 



Quality sub 5 Under 25 feet 



r- ~ ~ 



FOREST TYPES OF CANADIAN LIFE ZONE WITHIN THE APPALACHIANS 



In the Canadian Life Zone the following forest types are repre- 

 sented in the Appalachians : 



1-5. Eed spruce, qualities 2, 3, 4, 5, sub 5 (subalpine). 



6. Southern balsam, quality 4 



7. Alnus viridis (local). 



8. Rhododendron catawhiense (local). 



9. Black spruce — balsam (local). 



FOREST TYPES OF ALLEGHANIAN AREA, TRANSITION ZONE 



In tlie Alleghanian area of the Transition Zone there are two dis- 

 tinct forest divisions : the chestnut phase and the white pine and 

 sugar maple — birch phases. The chestnut phase is the more southern, 

 while the forest types of the white pine and sugar maple — birch 

 phases are more representative of the Alleghanian area to the north- 

 ward. In the following notes the paragraphs are numbered according 

 to the numbers of the types. 



1-4. Chestnut pure types, qualities 2, 3, 4 and 5. These types Avith their 

 transitions to other types occupy not less than 10 million acres from Connecticut 

 to northern Alabama. They are located especially on the acid and subacid 

 (often semi-peaty top soil, Porter black loam of the Bureau of Soils series) 

 soils from gneiss, metamorphosed sandstone and sandstone deficient in lime and 

 potash (Appendix 15). 



5-7. Chestnut oak pure types, qualities 3, 4 and 5. These types occupy not 



