A STUDY OF THE SPECIES. 21 



Serviceberry occurs principally in the heads of the cove hollows. 

 It may be found almost anywhere on the plateau in moist Bottom. 

 Most of the trees are bushy, and they often form thickets. The largest 

 specimen measured was 35 feet high and 5 inches in diameter. Service- 

 berry seeds even* year. Seedlings are common in shaded places. 



Scarlet Haw, which reaches 4 inches in diameter, is occasionally 

 found on the cove slopes, where it forms thickets in open places with 

 Slippery Elm, Eedbud, and Huckleberry. 



Black Cherry finds the cool, rich soil it requires only on Northerly 

 Slope. Most of it has been cut from The University Domain. The 

 largest specimen found measured 17 inches in diameter. Cherries are 

 borne by the tree about once in five years; but reproduction is very 

 scarce, and only in openings. Fire maj* account for the hollowness 

 of most of the larger trees. 



Becloud forms part of the undergrowth on the benches along North- 

 erly Slope. The largest specimen measured was 5 inches in diameter. 

 Many small saplings occur among the very young oak and hickory. 



Yelloiv-wood is found only in the deep ravines of the cove streams, 

 where it grows in the rich soil which gathers among the rocks. 

 Nowhere is it more than a shrub. The largest diameter measurement 

 taken was 3 inches. 



Locust occurs both in the coves and on the plateau — sparingly on 

 the latter. Most of the cove Locusts grow on the slopes as high as 

 the upper benches, where they form slender trees, not very tall, but 

 with long crowns. The largest cove Locust measured 29 inches in 

 diameter. The few Locusts found on the plateau grow singly near 

 its edge, on Hickory Slope. They have crooked stems and large, 

 irregular crowns. The largest Locust on the plateau measured 12 

 inches in diameter. The tree seeds about once in four years. Light 

 is required for the growth of seedlings. Reproduction is best on 

 Southerly Slope. On the plateau some of the Locusts killed by fire 

 have sprouted. 



Ailanthus is not common at Sewanee. Single trees may be found in 

 open places in the coves and on the plateau. The trees seen in the 

 woods were less than 8 feet high. Ailanthus reproduces abundantly, 

 both by seed and by sprouts. 



Dwarf Sumach occurs both on the plateau and in the coves, wherever 

 there is plenty of light. It is very common near the edge of the 

 plateau. It grows in patches of scrubby growth. No specimens over 

 5 inches in diameter were observed. The tree seeds well every year, 

 and seedlings come up thickly around the mother trees if not shaded out. 



Poison Sumach is found around the sources of some of the streams 

 that arise from springs. It is nowhere more than a little shrub, and 

 is not at all common. No young growth was observed. 



Sugar Maple becomes a large, tall, big-crowned tree on Northerly 



