Leaf Margins: Doubly-serrate

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River Birch
(Betula nigra)

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American Elm
(Ulmus americana)

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Japanese Maple
(Acer palmatum)

 

 

Leaf Margins: Doubly-serrate

The definition of doubly-serrate includes forward pointing teeth with each tooth (serration) having smaller serrations on it.

The double serration of American Elm is one of its key identification features. Its towering vase-shaped habit helps too.

The palmate leaf of the Japanese Maple (see photo at left) has clear doubly-serrate margins along every lobe.

Botanical Terminology > Leaf Margins > Doubly-serrate