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Ash Tree Identification. Key Ash Tree Characteristics. April 4, 2011 Picture Credits: David Cappaert , Michigan State University; Keith Kanoti , Maine Forest Service; Joseph O’Brien, USDA Forest Service; Robert Vidéki , Doronicum Kft Bugwood.org . Pinnately Compound Leaves - PowerPoint PPT Presentation
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Emerald Ash Borer information
http://nyis.info
PA DCNR - Forestry Archive, Bugwood.org
Ash Tree IdentificationKey Ash Tree Characteristics
Opposite Branch ArrangementsBuds, Leaves and Branches are
directly across from one another
Pinnately Compound LeavesLeaf made of leaflets arranged in a line with one terminal leaflet.
5-11 leaflets per leaf
Trees have anUpright, Oval Shape
Diamond Patterned BarkRidges and furrows form diamond shapes in older bark (green & white ash)
Single Samara FruitSeed surrounded by a dry, oar shaped wing
Stout Twigs support prominent Brown Buds
April
4, 2
011
Pict
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Cred
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Kei
th K
anoti
, Mai
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O’B
rien,
USD
A Fo
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Ser
vice
; Rob
ert V
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Kft
Bug
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Some lookalikes and their key differences:Norway Maple: Simple (not compound) lobed leaves, paired samaraBox Elder: Purplish twigs, lobed terminal leaflet, paired samaraElderberry: Shrub, purple berries, large, white flowersWalnut, Hickory, Mountain-Ash: Alternate branching
For more Emerald Ash Borer information and links go to http://nyis.info