Urban Tree Dendrology (Tree I.D.) Developed by: Sheldon Hammond, Northwest District ANR Program...
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Transcript of Urban Tree Dendrology (Tree I.D.) Developed by: Sheldon Hammond, Northwest District ANR Program...
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
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
Classes of Trees In the South
Gymnosperms Softwoods
Angiosperms Hardwoods Broadleaf Palms and
yuccas
Softwoods
Foliage Needles, scales
Reproduction cones
Examples Pines, hemlocks,
cedars, cypresses
Hardwoods
Foliage Broadleaf
Reproduction Flowers
Examples maple, oak,
pecan, walnut
Tree IdentificationFeatures
Leaves Twigs and stems Bark Flowers Fruit and seeds Cones
Tree IdentificationKeys
Tree IdentificationLeaf Characteristics
Part Type Shape Arrangement on the stem Venation Shape of apex and base Margin Surface
Tree IdentificationLeaf Characteristics
Parts
Tree IdentificationLeaf Characteristics
Type Hardwood
Simple Leaf Compound Leaf
Tree IdentificationLeaf Characteristics
Type Hardwood - Compound
Pinnate Bipinnate Palmate
Tree IdentificationLeaf Characteristics
Type Softwood
Awl-like Scale-like Needle-like
Tree IdentificationLeaf Characteristics
Shape
Ovate Lanceolate Cordate Spatulate Ellipitcal Obovate Oblanceolate
Obcordate Oblong Reniform Linear Cuneate Peltate Hastate
Tree IdentificationLeaf Characteristics
Arrangement on the stem
Opposite Whorled Alternate
Tree IdentificationLeaf Characteristics
Venation
Pinnate Palmate Parallel Dichotomous
Tree IdentificationLeaf Characteristics
Shape of apex and base Apices
Bases
Acute Acuminate Obtuse Truncate Emarginate Cuspidate
Obtuse Acute Cuneate Oblique Cordate
Tree IdentificationLeaf Characteristics
Margin
Entire Serrate Serrulate Doubly-serrate
Dentate Crenate Incised (lobed) Sinuate
Tree IdentificationLeaf Characteristics
Surface
Tree IdentificationTwigs And Stem
Tree IdentificationBark
Shape or general appearance. Texture Thickness Color
Smooth Furrowed Scaly Warty Shaggy
Tree IdentificationFlowers
Complete & Incomplete Perfect and Imperfect
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
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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