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Urban Tree Dendrology (Tree I.D.)

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?.

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Urban Tree Dendrology (Tree I.D.)

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  1. Urban TreeDendrology (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

  2. 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

  3. Classes of Trees In the South • Gymnosperms • Softwoods • Angiosperms • Hardwoods • Broadleaf • Palms and yuccas

  4. Softwoods • Foliage • Needles, scales • Reproduction • cones • Examples • Pines, hemlocks, cedars, cypresses

  5. Hardwoods • Foliage • Broadleaf • Reproduction • Flowers • Examples • maple, oak, pecan, walnut

  6. Tree IdentificationFeatures • Leaves • Twigs and stems • Bark • Flowers • Fruit and seeds • Cones

  7. Tree IdentificationKeys

  8. Tree IdentificationLeaf Characteristics • Part • Type • Shape • Arrangement on the stem • Venation • Shape of apex and base • Margin • Surface

  9. Tree IdentificationLeaf Characteristics • Parts

  10. Tree IdentificationLeaf Characteristics • Type • Hardwood Compound Leaf Simple Leaf

  11. Tree IdentificationLeaf Characteristics • Type • Hardwood - Compound Pinnate Bipinnate Palmate

  12. Tree IdentificationLeaf Characteristics • Type • Softwood Awl-like Scale-like Needle-like

  13. Tree IdentificationLeaf Characteristics • Shape Ovate Lanceolate Cordate Spatulate Ellipitcal Obovate Oblanceolate Obcordate Oblong Reniform Linear Cuneate Peltate Hastate

  14. Tree IdentificationLeaf Characteristics • Arrangement on the stem Opposite Whorled Alternate

  15. Tree IdentificationLeaf Characteristics • Venation Pinnate Palmate Parallel Dichotomous

  16. Tree IdentificationLeaf Characteristics • Shape of apex and base Apices Acute Acuminate Obtuse Truncate Emarginate Cuspidate Bases Obtuse Acute Cuneate Oblique Cordate

  17. Tree IdentificationLeaf Characteristics • Margin Entire Serrate Serrulate Doubly-serrate Dentate Crenate Incised (lobed) Sinuate

  18. Tree IdentificationLeaf Characteristics • Surface

  19. Tree IdentificationTwigs And Stem

  20. Tree IdentificationBark • Shape or general appearance. • Texture • Thickness • Color Smooth Furrowed Scaly Warty Shaggy

  21. Tree IdentificationFlowers • Complete & Incomplete • Perfect and Imperfect

  22. 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

  23. Acknowledgements • Funds for this project were provided by the Urban and Community Forestry Financial Assistance Program administered by the Georgia Forestry Commission. The U. S. Department of Agriculture (USDA) prohibits discrimination in all its programs and activities on the basis of race, color, national origin, gender, religion, age, disability, political beliefs, sexual orientation, and marital or family status. (Not all prohibited bases apply to all programs.) Persons with disabilities who require alternative means for communication of program information (Braille, large print, audiotape, etc.) should contact USDA’s TARGET Center at 202-720-2600 (voice and TDD). To file a complaint of discrimination, write USDA, Director, Office of Civil Rights, Room 326-A, Whitten Building, 14th and Independence Avenue, SW, Washington, DC 20250-9410 or call 202-720-5964 (voice or TDD). USDA is an equal opportunity provider and employer.

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