American Elm (Ulmus americana)
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
©2005 Gary J. Kling and Laura L. Hayden, University of Illinois at Urbana-Champaign. External sites are not endorsed by the University of Illinois.
Notes about this tutorial.
