Forestry Envirothon B. A. Stump 2010. Leaf Shapes.

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Presentation transcript:

Forestry Envirothon B. A. Stump 2010

Leaf Shapes

Scale Like

Broad & Flat

Needles

Leaf Arrangement

Alternate

Opposite

Whorled

Leaf Structure

Simple Leaf Petiole (Leaf Stalk) Bud

A Compound Leaf Leaflet Petiole (Leaf Stalk) Bud Pinnately Compound

A Compound Leaf Palmately Compound Leaflet Petiole (Leaf Stalk) Bud

(Alternate)

American Chestnut

(Alternate, rough on upper surface & soft-hairy below)

American Elm

(Alternate, short in-curved teeth)

Black Cherry

Black Cherry

(Alternate, finely toothed)

Black Willow

(Opposite, compound)

Box Elder

(Alternate)

Chestnut Oak

(Flat needles w/ small stalks)

Eastern Hemlock

(5 needles per cluster)

Eastern White Pine

(Alternate, double serrated)

Paper Birch

AL/Summer2003/Dawson_Dara/pawpaw.jpg Paw

(Alternate, compound, finely toothed leaflets)

Shagbark Hickory

(Opposite, has the largest fruit of native species of this tree in the state)

Silver Maple

(Alternate, rough leaves)

Slippery Elm

(Alternate)

Tulip Tree “T-shirt tree”

(Opposite, compound)

White Ash

(Alternate)

White Oak

Chestnut Oak White Oak

American Elm Slippery Elm

American Elm Paper Birch