1924] PALMER. THE LIGNEOUS FLORA OF RICH MOUNTAIN 127 



Acer rubrum L. The Red Maple is a common tree of the valley and 

 also frequent on rocky ledges and slopes on both sides of the mountains. 



Acer rubrum var. tridens Wood. This variety is found in the valley 

 and on ledges on the north mountain slopes. 



Acer Negundo L. The Box Elder grows along the rocky margins of 

 Big Creek, and is more rarely seen at higher levels. 



HIPPOCASTANACEAE 



Aesculus glabra var. monticola Sarg. This recently described Buckeye 

 was found here only at the higher levels on the north side of Rich Mountain, 

 and on the tableland at the summit. It is a slender branching shrub, 

 from 0.5 to 1.5 meters tall, and often grows gregariously. It is very con- 

 spicuous in bloom on account of the large size of the flower spike in pro- 

 portion to the whole plant. Its small fruit, low shrubby habit and 

 peculiar foliage make it very distinct from all other related forms. 



TILIACEAE 



Tilia floridana Small. This fine southern Linden grows in sandy 

 woods in the valley, and more abundantly on the north slopes of the moun- 

 tain. In the latter situation it often becomes a tree 20 to 25 meters tall, 

 and with a trunk diameter of a meter or more. It is also rarely found on 

 top of the mountain, where it is of small size. 



Tilia floridana var. hypoleuca Sarg. This form, with leaves pale or 

 silvery beneath, from a white powdery coating, is frequent on the mountain 



side. 



RHAMXACEAE 



Rhamnus caroliniana Walt. This rather attractive little tree, known 

 as Indian Cherry, is found sparingly in thickets along the creek. 



Ceanothus americanus L. Grows in rocky ground in the valley and in 

 open woods on the south slopes of the mountains. Not very abundant. 



Ceanothus ovatus Desf. This species is apparently rather rare. It 

 grows in similar situations to the last. 



Berchemia scandens (Hill) Trel. This stout woody twiner is very 

 common in thickets in the valley, and sometimes also grows in glades on 

 the mountain sides and on the summit. It is popularly called Supple- 

 jack in some sections, but in the Southwest it is usually known as Rattan 



vine. 



VITACEAE 



Vitis rotundifolia Michx. The Muscadine is very common in thickets 

 in the valley and along rocky creek banks. It is also sometimes found at 

 higher levels. It usually spreads over low bushes or climbs on small trees, 

 but never to a height of more than a few meters. The fruit is large and 

 sweet, and is quite agreeable when ripe, in late autumn. 



