UIPlants: Botanic Terminology

Winged Euonymus (Euonymus alatus)
Bronx green forsythia (Forsythia viridissima 'Bronxensis')	Korean Barberry (Berberis koreana)
Purple-leaved Japanese barberry (Berberis thunbergii var. atropurpurea')
More Difficult: The following example is a leaf base that shows attenuate characteristics on one side of the petiole and not the other.
European Beech (Fagus sylvatica)

Leaf Base: Attenuate

Attenuate Leaf Base

Definition: Leaf tissue tapers down the petiole (toward the base) to a narrow base always having some fleshy leaf on either side of the petiole.

Description: A few of the leaves that show an attenuate leaf base may also be called cuneate Use the terms in combination if appropriate.

Botanical Terminology > Leaf Base > Attenuate

©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.