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 Botanical Terminology Tutorial
Leaf Arrangement
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Leaf Arrangement: Opposite
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Explore Opposite Leaf Arrangement
Hedge Maple
(Acer campestre)
Explore Opposite Leaf Arrangement
Explore Opposite Leaf Arrangement
Corneliancherry Dogwood
(Cornus mas)
Arrowwood Viburnum
(Viburnum dentatum)

 

 

What are opposite leaves?

Def: Stems or leaves appear across from one another at the same node;

Arrangement Along Stem:
Opposite leaves may appear in either a distichous or decussate arrangement.

Distichous: Leaves arranged in two ranks along either side of the stem.

Decussate: Leaves arranged in opposite pairs, rotating 90° at every node.

As with many features, arrangement along the stem is not always opposite decussate or distichous.


Botanical Terminology > Leaf Arrangement > Opposite  

 

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