SALICACEAE 
Largetooth Aspen 
Populus grandidentata Michx. 
HABIT.—A medium-sized tree 30-50 feet high, with a slender 
trunk 12-20 inches in diameter; forming a loose, oval or rounded 
crown of slender, spreading branches and coarse spray. 
LEAVES.— Alternate, simple, 3-5 inches long, two-thirds as 
broad; orbicular-ovate; coarsely and irregularly sinuate-toothed ; 
thin and firm; dark green above, paler beneath, glabrous both 
sides; petioles long, slender, laterally compressed. 
FLOWERS.—April, before the leaves; dioecious; the stam- 
inate in short-stalked catkins 1-3 inches long; the pistillate in 
loose-flowered, long-stalked catkins at first about the same length, 
but gradually elongating; calyx 0; corolla 0; stamens 6-12, with 
red anthers; stigmas 2, 2-lobed, red. 
FRUIT.—May; 2-valved, conical, acute, hairy capsules % 
inch long, borne in drooping catkins 4-6 inches long; seeds 
minute, dark brown, hairy. 
WINTER-BUDS.—Terminal bud 4% inch long, ovoid to 
conical, acute, light chestnut, puberulous, dusty-looking. 
BARK.—Twigs greenish gray and at first hhoary-tomentose, 
becoming lustrous, orange or red-brown and finally greenish 
gray; thick, dark red-brown or blackish at the base of old trunks, 
irregularly fissured, with broad, flat ridges. 
WOOD,.—Light, soft, weak, close-grained, light brown, 
with thin, whitish sapwood. 
DISTRIBUTION.—A common tree in the northern portions 
of the Lower Peninsula, but rare in the Upper Peninsula. 
HABITAT.—Prefers rich, moist; sandy soil; borders of 
swamps; river-banks; hillsides. 
NOTES.—Grows rapidly in many soils. Easily transplanted. 
Short-lived. Useful for temporary effect. Propagated from seed 
or cuttings. 
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