EASTERN RED HILLS. 43 



observations in neighboring regions that the principal cli- 

 matic difference between this and the western division is 

 that there is a little more rain in the hottest part of the 

 year, late summer, which therefore has a greater leaching 

 effect on the soil than the cooler rains of winter and spring. 

 Tornadoes are probably less frequent than in the western 

 division.* 



VEGETATION. 



The general aspect of the forests is much like that in 

 the western division, except that there are more dry pine 

 and oak woods and fewer rich ravines, hammocks and 

 bluffs. The "pocosin" of Pike County (Fig. 15) is a forest 

 composed mostly of evergreen hardwoods, unlike anything 

 else known in Alabama, but not very different from many 

 sandy hammocks in Florida.f The commonest woody plants 

 in the region are about as follows : 



Commonest woody plants of eastern red hills. 



TIMBER TREES. 



Pinus palustris Long-leaf pine Sandy uplands. 



Pinus Taeda Short-leaf pine .Various situations. 



Pinus echinata ..Short-leaf pine Dry uplands. 



Quercus Marylandica Black-jack oak Dry uplands. 



Quercus falcata Red oak Dry uplands. 



Liriodendron Tulipifera.-Poplar _ -Branch-swamps, etc. 



Liquidambar Styraci- 



flua _ ..Sweet gum -.Various situations. 



Magnolia grandiflora Magnolia _ Hammocks. 



Pinus glabra ..Spruce pine -Hammocks. 



Nyssa biflora Black gum -Branch-swamps. 



Quercus laurifolia _ _. -Hammocks. 



Quercus alba White oak -Rich woods. 



Quercus nigra Water oak Low grounds. 



Quercus stellata .... Post oak _ Dry uplands. 



Acer rubrum ..Red maple Swamps. 



Fagus grandifolia Beech - Ravines and bottoms. 



Hicoria alba _..Hickory Dry woods. 



Pinus Elliottii Slash pine Shallow ponds. 



(Melia Azedarach) Chinaberry _ Roadsides, etc. 



Betula nigra Birch River-banks. 



Tilia heterophylla ? Lin Rich woods. 



Quercus velutina Black oak Uplands. 



Hicoria glabra (Pignut) hickory Hammocks, etc. 



Pinus serotina ....Black pine _ - Sandy swamps. 



*See Science II. 48:208-211, Aug. 30, 1918. 



fFor descriptions and illustrations of this interesting spot see 

 Monograph 8, pp. 99-100, 160-161, and a botanical paper cited in the 

 bibliography of the present report (page 21). 



