urban tree dendrology (tree i.d.)
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Urban Tree Dendrology (Tree I.D.). Developed by: Sheldon Hammond, Northwest District ANR Program Development Coordinator In Cooperation with The University of Georgia Cooperative Extension Service Urban Forestry Issue Team. What is a Tree?. - PowerPoint PPT PresentationTRANSCRIPT
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Urban TreeDendrology (Tree I.D.)
Developed by:Sheldon Hammond, Northwest District ANR
Program Development CoordinatorIn Cooperation with
The University of GeorgiaCooperative Extension Service
Urban Forestry Issue Team
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What is a Tree?
Often reaches 15 feet or more in height at maturity
Has a single trunk or dominant multiple trunks
Has no normal branches on the lower trunk
Has at least a partially defined crown
Usually larger than other plants and tend to be long-lived
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Classes of Trees In the South
Gymnosperms Softwoods
Angiosperms Hardwoods Broadleaf Palms and
yuccas
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Softwoods
Foliage Needles, scales
Reproduction cones
Examples Pines, hemlocks,
cedars, cypresses
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Hardwoods
Foliage Broadleaf
Reproduction Flowers
Examples maple, oak,
pecan, walnut
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Tree IdentificationFeatures
Leaves Twigs and stems Bark Flowers Fruit and seeds Cones
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Tree IdentificationKeys
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Tree IdentificationLeaf Characteristics
Part Type Shape Arrangement on the stem Venation Shape of apex and base Margin Surface
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Tree IdentificationLeaf Characteristics
Parts
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Tree IdentificationLeaf Characteristics
Type Hardwood
Simple Leaf Compound Leaf
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Tree IdentificationLeaf Characteristics
Type Hardwood - Compound
Pinnate Bipinnate Palmate
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Tree IdentificationLeaf Characteristics
Type Softwood
Awl-like Scale-like Needle-like
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Tree IdentificationLeaf Characteristics
Shape
Ovate Lanceolate Cordate Spatulate Ellipitcal Obovate Oblanceolate
Obcordate Oblong Reniform Linear Cuneate Peltate Hastate
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Tree IdentificationLeaf Characteristics
Arrangement on the stem
Opposite Whorled Alternate
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Tree IdentificationLeaf Characteristics
Venation
Pinnate Palmate Parallel Dichotomous
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Tree IdentificationLeaf Characteristics
Shape of apex and base Apices
Bases
Acute Acuminate Obtuse Truncate Emarginate Cuspidate
Obtuse Acute Cuneate Oblique Cordate
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Tree IdentificationLeaf Characteristics
Margin
Entire Serrate Serrulate Doubly-serrate
Dentate Crenate Incised (lobed) Sinuate
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Tree IdentificationLeaf Characteristics
Surface
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Tree IdentificationTwigs And Stem
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Tree IdentificationBark
Shape or general appearance. Texture Thickness Color
Smooth Furrowed Scaly Warty Shaggy
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Tree IdentificationFlowers
Complete & Incomplete Perfect and Imperfect
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Tree IdentificationFruits and Seeds
Simple Fruits Dry Fruit (indehiscent,
dehiscent) Fleshy Fruit
Compound Fruits Aggregate Fruits
Cones Pollen Cones Female Cones Seritinous Cones
Hickory – Dehiscent husk
Oak Acorn –Indehiscent
Persimmon- Berry
Cherry – Drupe
Apple – Pome
Sweetgum – Multiple head of nutlets
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Acknowledgements Funds for this project were provided by the Urban and Community
Forestry Financial Assistance Program administered by the Georgia Forestry Commission.
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