UIPlants: Botanic Terminology

Corneliancherry Dogwood (Cornus mas)
River Birch (Betula nigra)	Hardy Rubber Tree (Eucommia ulmoides)
American Elm (Ulmus americana)	Common Boxwood (Buxus sempervirens)
More Difficult: Here are two examples where a combination of venation types are apparent. Palmate, pinnate, and impressed are all expressed in one leaf.
Stephanandra (Stephanandra incisa)	Common Horsechestnut (Aesculus hippocastanum)

Venation: Impressed

Impressed Venation

Definition: Tissue near veins appear to pucker, giving veins a sunken or embossed appearance. Appearing to be pressed into the leaf.

Description: Veins are located below the plane of the surface and are often exposed on the lower surface. Tissue near veins often appears to pucker, giving veins a sunken or embossed appearance. The photo of the Hardy Rubber Tree is the least impressed of the three samples here. All three of these examples are also pinnate /a>.

Botanical Terminology > Venation > Impressed

©2005 Gary J. Kling, Laura L. Hayden, and Joshua J. Potts University of Illinois at Urbana-Champaign.
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Notes about this tutorial.