pennsylvania forest stewardship program identifying pennsylvania trees
TRANSCRIPT
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Pennsylvania Forest Stewardship
Program
Identifying Pennsylvania
Trees
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Tree Identification
• In this presentation you will learn to identify trees using the Summer Key to Pennsylvania Trees.
• Trees can be identified using many factors including leaves, bark, twigs, buds, flowers, and fruits.
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Leaf Types
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Scale-like
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Broad and flat
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Needles
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Leaf-type Comparison
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Leaf Arrangement
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Alternate
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Opposite
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Whorled
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Leaf Arrangement Comparison
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Leaf Structure
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Petiole (leaf stalk)
Bud
A simple leaf
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Leaflet
Petiole (leaf stalk)
Bud
Pinnately compound
A Compound Leaf
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A Compound Leaf
Leaflet
Petiole (leaf stalk)
Bud
Palmately compound
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Leaf Structure Comparison
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Leaf margins
Dentate
EntireDouble serrate
Lobed
Serrate
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Identification Section
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Hint: opposite
Red Maple ID Slide
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Red MapleAcer rubrum
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Red Maple
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Hint: opposite
Sugar Maple ID Slide
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Sugar MapleAcer saccharum
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Sugar Maple
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Hint: opposite
Flowering Dogwood ID Slide
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Flowering DogwoodCornus florida
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Flowering Dogwood
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Hint: alternate
Northern Red Oak ID Slide
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Northern Red OakQuercus rubra
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Northern Red Oak
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Hint: alternateWhite Oak ID Slide
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White OakQuercus alba
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White Oak
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White Oak Red OakWhite Oak versus Red Oak Comparison
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Hint: alternate
American Beech ID Slide
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American BeechFagus grandifolia
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American Beech
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Hint: alternate / hairy
Yellow Birch ID Slide
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Yellow Birch Betula alleghaniensis
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Yellow Birch
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Hint: alternate/hairySweet (Black) Birch ID Slide
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Sweet (Black) BirchBetula lenta
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Sweet (Black) Birch
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Hint: alternate; hairy
Paper Birch ID Slide
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Paper BirchBetula papyrifera
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Paper Birch
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Eastern Hemlock ID Slide
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Eastern HemlockTsuga canadensis
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Eastern Hemlock
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Eastern Redcedar ID Slide
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Eastern RedcedarJuniperus virginiana
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Eastern Redcedar
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Hint: leaves do not have stalks
Balsam Fir ID Slide
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Balsam FirAbies balsamea
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Balsam Fir
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Norway Spruce ID Slide
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Norway SprucePicea abies
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Norway Spruce
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Balsam Fir Norway SpruceFir versus Spruce
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(one bundle)
Eastern White Pine ID Slide
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Eastern White PinePinus strobus
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Eastern White Pine
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Hint: oppositeHorse Chestnut ID Slide
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Horse Chestnut Aesculus hippocastanum
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Horse Chestnut
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Hint: needles more than 3 inches long
Red Pine ID Slide
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Red PinePinus resinosa
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Red Pine
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Hint: leaves rough
American Elm ID Slide
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American ElmUlmus americana
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American Elm
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Clue: alternate, sap not milky
Bitternut Hickory ID Slide
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Bitternut HickoryCarya cordiformis
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Bitternut Hickory
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Pitch Pine ID Slide
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Pitch PinePinus rigida
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Pitch Pine
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Hint: leaf not compound and not hairy, margins have fine teeth; leaf stalks have glands.
Black Cherry ID Slide
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Black CherryPrunus serotina
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Black Cherry
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Hint: sap not milky; leaves hairy
Black Walnut ID Slide
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Black WalnutJuglans nigra
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Black Walnut
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American Larch ID Slide
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American LarchLarix laricina
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American Larch
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Not found in the keyWild Grape
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Wild GrapeVitis spp.
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Wild Grape
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White Ash ID Slide
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White Ash Fraxinus americana
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White Ash
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Not found in the keySycamore
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SycamorePlatanus occidentalis
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Sycamore
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Sassafras ID Slide
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SassafrasSassafras albidum
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Sassafras
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Hint: leaves usually greater than 5 inches
long
Cucumber-tree Magnolia ID Slide
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Cucumber-tree MagnoliaMagnolia acuminata
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Cucumber-tree Magnolia
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Sweetgum ID Slide
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Sweetgum Liquidambar styraciflua
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Sweetgum
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Norway Maple ID Slide
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Norway MapleAcer platanoides
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Norway Maple
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Hint: sap not milky
Black Locust ID Slide
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Black LocustRobinia pseudoacacia
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Black Locust
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Striped Maple ID Slide
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Striped MapleAcer pensylvanicum
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Striped Maple
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Hint: milky sap
Smooth Sumac ID Slide
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Smooth SumacRhus glabra
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Smooth Sumac
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Yellow-poplar ID Slide
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Yellow-poplar Liriodendron tulipifera
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Yellow-poplar
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The Summer Key To Pennsylvania Trees is a small part of the Pennsylvania 4-H forestry curriculum. Contact your Penn State Cooperative Extension Office to request additional information about 4-H and other educational programs.
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•Prepared by Paul Roth, Research Assistant, and Rance Harmon, Extension Associate, The Pennsylvania State University, School of Forest Resources & Cooperative Extension
Acknowledgements•Idea development and review: Jason Hall, Sandra Insalaco, and Cecile Stelter – Service Foresters – Pennslyvania Department of Conservation and Natural Resources, Bureau of Forestry
•Review: James Finley & Sanford Smith, The Pennsylvania State University School of Forest Resources & Cooperative Extension
•Images provided courtesy of Virginia Tech & The University of Wisconsin.
•Line art courtesy of The Pennsylvania State University College of Agricultural Sciences and the Pennsylvania 4-H Program
References•Common Trees of Pennsylvania, Department of Conservation & Natural Resources, Bureau of Forestry
•The Audubon Society Field Guide to North American Trees Eastern Region, Knolph, Alfred A. Inc. 1980
•Virginia Tech Dendrological Web Page, www.fw.vt.edu/dendro/dendrology/main.html
•University of Wisconsin, botanical images, www.wisc.edu/botit/dendrology/names.html
Penn State is committed to affirmative action, equal opportunity, and the diversity of its workforce . © The Pennsylvania State University, 2002