Tree identification basics
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Tree Identification Basics. Broad Classification Scheme. Annual, Biennial, or Perennial?. Marigold – Tagetes erecta. Marigold is an annual plant. Biennial. A species that completes it’s life cycle in 2 growing seasons. White Oak – Quercus alba. An oak tree is a perennial plant.

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Tree Identification Basics

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Tree identification basics

Tree Identification Basics


Broad classification scheme

Broad Classification Scheme


Annual biennial or perennial

Annual, Biennial, or Perennial?


Marigold tagetes erecta

Marigold – Tageteserecta

  • Marigold is an annual plant.


Biennial

Biennial

  • A species that completes it’s life cycle in 2 growing seasons.


White oak quercus alba

White Oak – Quercus alba

  • An oak tree is a perennial plant.


Herbaceous or woody

Herbaceous or Woody?


Daylily hemerocallis

Daylily - Hemerocallis

  • A daylily is an example of a herbaceous, perennial plant.


Burning bush euonymus alatus

Burning Bush – Euonymus alatus

  • Burning Bush is an example of a woody, perennial plant.


Deciduous coniferous evergreen or broad leaf evergreen

Deciduous, coniferous evergreen or broad-leaf evergreen?


Sugar maple acer saccharum

Sugar Maple – Acer saccharum

  • Sugar Maple is a deciduous, woody perennial plant.


Norway spruce picea abies

Norway Spruce – Piceaabies

  • Norway Spruce is a coniferous evergreen, perennial plant.


Holly ilex

Holly - Ilex

  • Holly is a broad-leaf evergreen, perennial plant.

Ilex meserveae 'Blue Angel'


Deciduous conifers yep

Deciduous Conifers? – Yep!

Eastern larch

Bald cypress


Leaf morphology

Leaf Morphology


Leaf shapes

Leaf Shapes


Leaf margins

Leaf Margins


Leaf types

Leaf Types


Basic leaf types

Basic Leaf Types

  • Simple

  • Compound

    • Pinnately compound

    • Bipinnately compound

    • Palmately compound

  • Scale-like

  • Needle-like


Simple leaf

Simple Leaf


Pinnately compound leaf

Pinnately Compound Leaf


Bipinnately compound leaf

Bipinnately Compound Leaf


Palmately compound

Palmately Compound


Scale like leaves

Scale-like Leaves


Needle like leaves

Needle-like Leaves


Leaf arrangement

Leaf Arrangement


Alternate

Alternate


Opposite

Opposite


Whorled

Whorled

Oleander


Time to test your skills

Time to test your skills…


Tree identification basics

  • Leaf type?

  • Leaf shape?

  • Leaf margin?

  • Leaf arrangement?


Tree identification basics

  • Leaf type?

  • Leaf shape?

  • Leaf margin?

  • Leaf arrangement?


Tree identification basics

  • Leaf type?

  • Leaf shape?

  • Leaf margin?

  • Leaf arrangement?


Tree identification basics

  • Leaf type?

  • Leaf shape?

  • Leaf margin?

  • Leaf arrangement?


Tree identification basics

  • Leaf type?

  • Leaf shape?

  • Leaf margin?

  • Leaf arrangement?


Tree identification basics

Buds


3 basic bud types

3 Basic Bud Types

  • Vegetative

  • Flower

  • Mixed


Flowering dogwood cornus florida

Flowering Dogwood – Cornusflorida

Flower bud

Vegetative bud


Pagoda dogwood cornus alternifolia

Pagoda Dogwood – Cornusalternifolia

Mixed bud


Buds with scales vs naked buds

Buds with scales vs. naked buds

Paper birch

Wayfarringtreeviburnum


Warning

WARNING!

  • I would advise against doing a Google image search using the key words “naked buds”.


Stem morphology

Stem Morphology


Tree identification basics

Terminal

Bud


Terminal bud

Terminal Bud

Bitternut hickory

Common lilac


Tree identification basics

  • Lateral

  • Buds


Lateral buds

Lateral Buds

Basswood


Tree identification basics

Leaf

Scars


Leaf scars

Leaf Scars

Black walnut

Northern catalpa

Green ash


Tree identification basics

Vascular

Bundle

Scars


Vascular bundle scars

Vascular Bundle Scars

Ohio buckeye


Tree identification basics

Terminal

Bud Scale

Scars


Terminal bud scale scars

Terminal Bud Scale Scars


Tree identification basics

Lenticels


Lenticels

Lenticels

White poplar

Paperbark cherry


Lenticels1

Lenticels

Tree-of -heaven


Tree identification basics

Pith


Tree identification basics

Pith

Black walnut

Butternut


Tree identification basics

Pith

Kentucky Coffeetree


Time to test your skills1

Time to test your skills…

  • Take a look at the twig image and answer the following:

  • What’s the leaf arrangement?

  • Does your twig have a terminal bud? Lateral buds?

  • Can you find any leaf scars? Vascular bundle scars?

  • Can you find any lenticels?

  • Can you find the most recent set of terminal bud scale scars?

  • Do you even care anymore?

  • Do you have a headache?


White ash

White ash

White ash


Tree identification basics

END


Plant nomenclature

Plant Nomenclature


Common botanical names

Common & Botanical Names

  • Plants have 2 different names:

    • Common Name

    • Botanical or Scientific Name


Tree identification basics

Sugar Maple

Acer saccharum


Tree identification basics

  • Acer saccharum

    • Acer = genus

    • saccharum= specific epithet

    • genus + specific epithet = the “binomial” that identifies a species


Linneaus

Linneaus


Tree identification basics

  • Gymnocladusdioicus

    • What’s the name of the genus?

    • What’s the name of the specific epithet?

    • What’s the name of the species?


Tree identification basics

  • Acer saccharum‘Autumn Splendor’

    • ‘Autumn Splendor’ is a cultivar name

    • cultivars, generally speaking, do not come true-to-type from seed.

  • A species may have several cultivars or none at all:

  • Acer saccharum‘Arrowhead’

  • Acer saccharum‘Cary’

  • Acer saccharum‘Millane’s Dwarf’

  • Acer saccharum‘Seneca Chief’, etc…


Tree identification basics

Gleditsiatriacanthosinermis

Gleditsiatriacanthosvar.inermis

inermisis a variety name. Varieties come true-to-type from seed.


Tree identification basics

Acer saccharumLegacy®

Legacy® is a registered trademark (PP 4,979). Legacy® is registered with the Office of Trademarks and Patents in Washington, DC.

Acer saccharumOregon TrailTM

Oregon TrailTM is a trademarked plant. The TM protects the commercial application of that name to said plant.


Tree identification basics

End


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