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 Botanical Terminology Tutorial
Leaf Arrangement
Venation
Leaf Shape
Leaf Margin
Leaf Apex
Leaf Base
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Leaf Bases: Attenuate
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Click on the name for detailed information on the plant.

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Winged Euonymus
(Euonymus alatus)

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Bronx Green Forsythia
(Forsythia viridissima 'Bronxensis')

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Japanese Pachysandra
(Pachysandra terminalis)

More difficult: The following example is a leaf base that shows attenuate characteristics on one side of the petiole and not the other.

Explore Opposite Decussate
European Beech
(Fagus sylvatica)

 

 

 

Attenuate Leaf Base

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

Botanical Terminology > Leaf Bases > Attenuate  

 

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