2019 tree id basics

1. Pennsylvania Forest
Stewardship
Program
Identifying
Pennsylvania
Trees

2. 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.

3. Leaf Types

4. Scale-like

5. Broad and flat

6. Needles

7. Leaf-type Comparison

8. Leaf Arrangement

9. Alternate

10. Opposite

11. Whorled

12. Leaf Arrangement Comparison

13. Leaf Structure

14. Petiole (leaf stalk)
Bud
A simple leaf

15. Leaflet
Petiole (leaf stalk)
Bud
Pinnately compound
A Compound Leaf

16. A Compound Leaf
Leaflet
Petiole
(leaf stalk)
Bud
Palmately compound

17. Leaf Structure Comparison

18. Leaf margins
Dentate
EntireDouble
serrate
Lobed
Serrate

19. Identification
Section

20. Hint: opposite
Red Maple ID Slide

21. Red Maple
Acer rubrum

22. Red Maple

23. Hint: opposite
Flowering Dogwood ID
Slide

24. Flowering Dogwood
Cornus florida

25. Flowering Dogwood

26. Eastern Hemlock
Tsuga canadensis

27. Eastern Hemlock

28. (one bundle)
Eastern White Pine ID Slide

29. Eastern White Pine
Pinus strobus

30. Eastern White Pine

31. Hint: sap not milky; leaves hairy
Black Walnut ID Slide

32. Black Walnut
Juglans nigra

33. Black Walnut

34. Black Locust ID Slide

35. Black Locust ID Slide
Red Oak

36. Black Locust ID Slide
Red Oak