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The Trees of Texas 
tL. (POPULUS. L. The Poplars. 
Large, rapidly growing forest trees with large, scaly, resin- 
ous buds; pale, furrowed bark; alternate, toothed or lobed 
leaves, and flowers borne in catkins. 
Petiole of leaf round, scarcely or not at all flattened 
laterally, buds cottony, leaves more or less 
RS TERR ha er ob key Ree a 12-P. alba. 
Petiole of leaf flattened laterally, leaves with mar- 
gins notched or toothed, but not lobed. 
Leaves broadly deltoid, abruptly sharp pointed at 
the apex. 
Leaf blades for the most of the leaves longer 
STIS Te | eo ee Mae ea 2. P. deltoides. 
Leaf blades mostly broader than long. 
Leaves truncate and slightly cordate at 
base with many small teeth.......... 3. P. Fremontii. 
Leaves more or less cuneately narrowed on’ : 
the petiole with few teeth which are : 
relatively larger than the preceding... 4. P. Wislizeni. 
1. Populus alba L. White Poplar. Silver-leaf Poplar. A 
large tree with height of 100° and trunk diameter of 3° or fre- 
quently much smaller, with numerous suckers developing from 
the rocts. Bark on young trees smooth, gray, or a greenish 
white: on old trees furrowed, gray or brown. Leaves ovate 
or triangular, irregularly toothed, or 3-5 lobed, pointed, firm, 
densely white, velvety, hairy beneath when young becoming 
smoother with age. The leaf petiole is almost round, some- 
times fiattened somewhat laterally, shorter than the blade of 
the leaf. 
Introduced from Europe. It is cultivated throughout a 
large portion of the state for ornament. 
The silver poplar grows rapidly, is adapted to a wide range 
of soils, is easily propagated and stands pruning well. It is 
planted in many localities as an ornamental tree, for which 
purpose it is perhaps the most valuable of the poplars. 
2. Populus deltoides Marshall. Cottonwood. Carolina Pop- 
lar. Necklace Poplar. <A large tree 120° or more in height 
and 6°-8° in diameter, found principally along stream banks. 
Bark gray with a greenish cast, thin and smooth on young 
twigs, and branches, thick end fissured on old branches and 
