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Tree Identification of Common Tree Species found in Ontario. As simple as one – two – tree!. Topics covered. What is a tree? Forest regions of Canada Coniferous vs. Deciduous What’s in a name? Identification features Coniferous trees of Ontario Deciduous trees of Ontario. What is a tree?.

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Tree Identification of Common Tree Species found in Ontario


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    1. Tree Identificationof Common Tree Species found in Ontario As simple as one – two – tree!

    2. Topics covered • What is a tree? • Forest regions of Canada • Coniferous vs. Deciduous • What’s in a name? • Identification features • Coniferous trees of Ontario • Deciduous trees of Ontario

    3. What is a tree? • Woody perennial plant • Grows to a height of at least 4.5 m • Two divisions: • Pinophyta (cone-bearing plants) • Magnoliophyta (flowering plants)

    4. Deciduous Also known as hardwoods and broadleaf trees Bears a leaf Leaves fall off the tree in the autumn Has a true flower 84 native species in Ontario Coniferous Also known as softwoods and evergreens Bears a needle-like or scale-like leaves Needle or scale-like leaves do not fall in autumn (except for larch) Bears a cone 14 native species in Ontario Coniferous vs. Deciduous

    5. What’s in a name? • Each tree has a common name and a scientific name. • Common name may change depending on where you live • Scientific names are grouped by Family, Genera and Species and never change. • Common Name: Sugar maple • Scientific name: Acer saccharum Marsh. • Family: Aceraceae • Genus: Acer • Species: Saccharum • Person who named the tree: Marsh.

    6. How to identify a tree? • Learn the tree identification features • Know your site or habitat • Upland, lowland, soil type • Use a tree identification key • Determine whether coniferous or deciduous. • Check to see bud or leaf arrangement

    7. Tree Identification Features • Leaf • Twig and bud • Bark • Size and form • Shade tolerance • Seed • Wood • Site or habitat

    8. 1. Leaf identification • A: Leaf type • B: Arrangement on twig • C: Leaf shape • D: Leaf margin

    9. A: Leaf Types • Simple or Compound Leaf • Scale-like Leaf • Needle-like Leaf • Singly on twig • In bundles of 2, 3, 5 or more

    10. Simple undivided Compound Divided into leaflets Leaf Types continue

    11. Leaf Types continue Scale-like Leaf Needle-like Leaf In bundles of 5 In bundles of 2 Singly on twig

    12. B: Leaf Arrangement • Alternate • Leaves grow alternately on twig • Opposite • Leaves grow opposite of each other on twig • Whorled • Leaves grow in a circular fashion on the twig

    13. C: Leaf Shape oval reversed oval linear heart-shaped cordate cuneate

    14. D: Leaf Margins • Smooth • Toothed • Wavy or lobed

    15. 2. Twig and Buds • Twig with opposite bud arrangement Terminal bud Leaflets Lenticels Lateral bud Compound leaf Leaf-scar End bud-scar Double compound leaf Solid pith

    16. Twig and Buds continue • Twig with alternate bud arrangement Terminal bud Lateral bud Leaf tip Midrib Lenticels Sinus or Cleft Lobe Leaf stalk Vein

    17. 3. Bark • Identifying features: • Colour WhiteGreyBrown/Black • Structure Flaky Smooth Rough

    18. 3. Bark • Identifying features: • Pattern Furrowed Flat Topped Ridges

    19. 3. Bark • Varies by age and growth rate

    20. 4. Size and Form • Form refers to the shape of the • crown, the branches and the trunk. • Each species has a characteristic • form when grown in the open

    21. 5. Shade Tolerance • All tree species have a tolerance level for shade. • Intolerant • Species that cannot survive in shaded conditions. They need direct sunlight to grow. • Intermediate • Species that can survive in partially shaded conditions. • Tolerant • Species that can live in shaded conditions

    22. Shade Tolerance Chart

    23. 6. Seed • Acorns and Nuts e.g. oaks, American beech, American chestnut • Winged e.g. maples, eastern hemlock, spruces • Fleshy fruit and pods e.g. viburums, dogwoods, black locust

    24. 7. Wood • Density • Colour • Grain Butternut Hemlock Oak Cedar

    25. 8. Site or Habitat • Soil structure, texture and fertility, moisture regime, slope and aspect and climate all have an impact on species of trees growing on a particular site • Examples: • Bog – black spruce, larch • Upland, rocky terrain – sugar maple, hickory, beech, red oak, jack pine • Lowland – black ash, red maple, elm, tamarack

    26. Trees of Canada A great source of information! Written by: John Laird Farrar ISBN: 1-55041-199-3 Published by: Fitzhenry & Whiteside Limited and the Canadian Forest Service, Natural Resources Canada

    27. Coniferous Needle Trees, Evergreens, Softwoods Class: Magnoliopsida Division: Pinophyta

    28. Coniferous Leaf • Scale-like Leaf • Needle-like Leaf • Singly on twig • Needles in bundles

    29. Scale-Like Leaf

    30. Eastern Red-Cedar • Juniperus virginianaEastern Juniper, Red juniper

    31. Eastern White Cedar • Thuja occidentalis • Northern White Cedar, Swamp Cedar, Eastern Arbovitae

    32. Other Conifers with Scale-Like Leaves

    33. Needle-Like Leaf * Singly on Twig *

    34. Balsam Fir • Abies balsamea • Canada Balsam, Canada Fir, White Fir

    35. White Spruce • Picea glauca • Cat Spruce, Skunk Spruce, Pasture Spruce, Canadian Spruce

    36. Blue Spruce • Picea pungens • Colorado Spruce, Silver Spruce

    37. Red Spruce • Picea rubens • Eastern Spruce, Yellow Spruce

    38. Black Spruce • Picea mariana • Bog Spruce, Swamp Spruce

    39. Norway Spruce • Picea abies • Common Spruce

    40. Eastern Hemlock • Tsuga canadensis • Canada Hemlock, Hemlock Spruce

    41. Other Conifers with Needle-Like Leaves (Single Needles)

    42. Needle-Like Leaf * Needle Bundles *

    43. Red Pine • Pinus resinosa • Norway Pine

    44. Austrian Pine • Pinus nigra • European Black Pine

    45. Jack Pine • Pinus banksiana • Black Pine, Gray Pine, Scrub Pine, Banksian Pine

    46. Scots Pine • Pinus sylvestris • Scotch Pine

    47. Mugho Pine • Pinus mugo • Swiss Mountain Pine

    48. Eastern White Pine • Pinus strobus • Northern White Pine, Weymouth Pine

    49. Pitch Pine • Pinus rigida