150 Bulletin of the University of Texas 



close grained, yellow or brown. A gum exudes from freshly 

 cut wood. 



STYRACEAE A. De Condolle. The Storax Family 

 Mohrodendron Britton. Silverbells. 



Trees or shrubs with alternate, membranous, deciduous 

 leaves, flowers in lateral drooping clusters and dry nut-like 

 fruit, 2-4 winged. 



Fruit 2-winged 1. M. dipterum. 



Fruit 4-winged 2. M. Carolinum. 



1. Mohrodendron dipterum (Ellis) Britton. Snowdrop 

 Tree. A shrub or small tree 20-30 high with scaly, reddish 

 brown bark and light green twigs which finally become red- 

 dish brown. Leaves firm, ovate to obovate, pointed at the 

 apex, 4'-5' long, l%'-3' wide, coarsely toothed, light green 

 and smooth above except along the veins, hairy beneath. Flow- 

 ers white, showy, in clusters. Fruit an oblong or elliptic, 

 2-winged drupe. 



In moist places, Tennessee, South Carolina, Florida and 

 Texas. Frequently planted for ornament. 



2. Mohrodendron Carolinum (L.) Britton. Silverbell Tree. 

 A shrub or small tree with ascending branches and reddish 

 brown scaly bark. Leaves thin, oval to obovate, pointed at 

 the apex, finely toothed, smooth above except along veins, 4'-6' 

 long, 2'-3' wide, hairy beneath. Flowers white, showy, bell- 

 shaped in clusters. Fruit an oblong ovoid drupe, 4 winged. 



In woods, Virginia to Illinois, Florida and Texas. Planted 

 for ornament. 



OLEACEAE Lindley. The Olive Family. 



Trees or shrubs with mostly opposite, simple or compound 

 leaves. Flowers in clusters, perfect or dioecious/ Fruit a 

 samara or a drupe. 



Fruit a dry samara, leaves compound 1. Fraxinus. 



Fruit fleshy, leaves simple. 



Flowers white, showy 2. Chionanthus. 



Flowers greenish, small , 3. Adelia. 



