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Articles 1 to 12:
Common Trees of Pennsylvania
Forests have always been important to the inhabitants of the area we now call "Pennsylvania" (Latin for "Penn's Woods"). Pennsylvania's location spanning 40 degrees - 42 degrees north latitude and its varied terrain support 108 [... more]
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Fire Cherry - PA DCNR
LEAVES: Alternate, simple, 3" - 5" long, with tapering or rounded base and sharp-pointed tips, sharply toothed margins, shining green and smooth on both sides. TWIGS: Slender, smooth, glossy bright red, sometimes with a thin grayish coating, ... [... more]
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Bitternut Hickory - PA DCNR
LEAVES: Alternate, compound, 6"-10" long, divided into 7-11 lance-shaped leaflets, bright green and smooth above, paler and somewhat downy beneath, margins finely to coarsely toothed. TWIGS: Slender smooth, glossy, orange-brown to grayish with . [... more]
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Mockernut Hickory - PA DCNR
LEAVES: Alternate, compound, 8"-12" long with 7 to 9 leaflets, margins toothed, dark yellowish green above, brownish beneath with golden glandular dots, leaves very fragrant when crushed, the leaf stems finely hairy. TWIGS: Stout and hairy, ... [... more]
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Sassafras - PA DCNR
LEAVES: Alternate, simple 4"-6" long, smooth, dark green above, much lighter beneath, characteristically aromatic when crushed. Usually three types can be found on a tree: entire, 2-lobed and 3-lobed (rarely 5-lobed). TWIGS: Bright green, ... [... more]
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Flowering Dogwood - PA DCNR
LEAVES: Opposite, simple, 3"-5" long; clustered toward tips of twigs; margins smooth or wavy; veins prominent and curved like a bow. Foliage bright red in autumn. TWIGS: Red tinged with green, often with a bluish white powdery coating; marked .. [... more]
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Pitch Pine - PA DCNR
LEAVES: Evergreen needles in clusters of 3, stiff, 21/2"-5" long, yellowish green. TWIGS: Stout, brittle, rough, angled in cross-section, golden-brown. Buds egg-shaped, about 1/2" long, resinous, red-brown. FRUIT: Cones 11/2"-31/2& [... more]
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Quaking Aspen - PA DCNR
LEAVES: Alternate, simple, almost round 1"-3" in diameter, margins finely toothed, shiny dark green above, lighter below; petiole slender, flattened. TWIGS: Slender, reddish brown, smooth, shiny, pith white and 5-angled. Buds sharp-pointed, ... [... more]
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Pignut Hickory - PA DCNR
LEAVES: Alternate, compound, 8"-12" long usually divided into 5 toothed, lance-shaped leaflets. The leaf is smooth on both surfaces, dark yellowish green above and paler beneath. TWIGS: Slender and usually smooth, reddish brown with numerous [... more]
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Table Mountain Pine - PA DCNR
LEAVES: Needles in clusters of 2, 2"-4" long, light bluish-green, stout and very stiff, twisted and sharp-pointed, tufted at the ends of branches, persisting 2-3 years. TWIGS: Stout, rather brittle, at first smooth and light orange to purplish, [... more]
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Sycamore - PA DCNR
LEAVES: Alternate, simple, 3-5 lobed, 4"-7" across, generally wider than long, light green above, paler and wooly beneath, petiole hollow at the base, enclosing next year's bud. TWIGS: At first green and hairy, later brownish, smooth, zigzag, .. [... more]
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Black Locust - PA DCNR
LEAVES: Alternate, compound, 7-19 oval leaflets 1"-2" long, margins smooth. TWIGS: Angled, somewhat zigzag, brittle, with short stout prickles; no end bud, side buds small and hidden in winter. FRUIT: A thin, flat pod, 2"-4" long; [... more]
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