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Botanical Terminology Tutorial
Leaf Arrangement
Venation
Leaf Shape
Leaf Margin
Leaf Apex
Leaf Base
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Common Periwinkle
(Vinca minor)

api-acute-il.gif

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River Birch
(Betula nigra)

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Hesse European Ash
(Fraxinus Excelsior 'Hessei')

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Chinese Elm
(Ulmus parvifolia)

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Inkberry
(Ilex glabra)

More Difficult: The Purple-leaved Japanese Barberry listed below shows that the leaf also has a mucronate apex.

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Purple-leaved Japanese barberry
(Berberis thunbergii var. atropurpurea')

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Leaf Apex: Acute

Acute Leaf Apex

Definition: An angle that is less than 90º with straight lines and having a point on a leaf apex.

Description: The term acute is most often applied to apices, but it is sometimes used for bases where it refers to a wider base than cuneate

Botanical Terminology > Leaf Apex > Acute  

 

©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.