

ho 
at | 
The Trees of Texas fe 

Fig. 39. Ptelea trifoliata. 
SIMARUBACEAE De Condolle. 
Ailanthus Desfontaines. 
1. Ailanthus glandulosa Desf. Tree of Heaven. A large 
rapidly growing tree with thin pale bark, marked with large 
lenticels. Leaves large, unequally pinnate, ill-scented, leaf- 
lets 13-41, short stalked, pointed, notched at base with green 
glands on the under side of the teeth. Flowers greenish 
white in large panicels. . Fruit a linear, curved samara with 
the seed in the middle. A chinese tree naturalized and fre- 
quently planted for ornament. It sprouts freely from the 
roots and becomes a pest in some localities. 
