Economic uses. ‘Too rare to be of any economic use. 
Horticultural value. Adapted to a moist soil, in which it grows 
very rapidly. Propagated either by cuttings or seedlings. It is 
used as a windbreak and is frequently planted for ornamental pur- 
poses. 
2. POPULUS. Tue Popwars. 
(From the Latin, populus the people; the trees used by the ancients along the highways.) 
Rapidly growing trees; buds large, scaly and more or less resin- 
ous; leaves alternate, broad, toothed or sometimes lobed; flowers 
on pendulous catkins; anthers purple-red. 
In the following key mature leaves from trees are considered: 
Winter buds cottony, leaves more or less lobed........... 1 P. alba. 
Winter buds not cottony, leaves with margins more or 
less regularly toothed. 
Winter buds pubescent, appearing dusty; margins of 
leaves with 5 or less teeth per 25 mm. (1 inch).... 2 P. grandidentata. 
Winter buds glabrous or nearly so; margins of leaves 
with 6 or more teeth per 25 mm. (1 inch). 
Leaf blades blunt or rounded at the apex; shoots at 
first hoary becoming glabrous and brown...... 3 P. heterophylla. 
Leaf blades sharp pointed at the apex; shoots smooth — 
or with only a few hairs, becoming gray. 
Apex of most of the leaves without teeth for about 
5 mm. (4% inch); winter buds resinous and 
sticky, about 8 mm. (14 inch) long; stamens 
Le sGerbvamnell oh. trae mene nln tees cree es nes ht 4 P. tremuloides. 
Apex cf most of the leaves without teeth for about 
10 mm. (1% inch); winter buds resinous but 
dry, about 12 mm. (1% inch) long; stamens 
MOLE AU MAM Ml ea eA ede rein ua Whee NAN, et Semler t 5 P. deltoides. 
1. Populus alba Linneus. Siiver-LeAr Popnuar. Plate 19. 
Bark on young trees smooth, greenish-white or gray, on old trees 
furrowed, gray or dark brown; young twigs hairy, becoming smooth 
in age; leaves ovate or triangular, 3-5 lobed or occasionally irregu- 
larly toothed, hairy on both surfaces while expanding, becoming 
dark green and glabrous above and remaining white-hairy beneath; 
stamens usually less than 15, flowering season, March, April or 
May. 
Distribution. Introduced from Europe, now frequent in all parts 
of the State. 
