University of Illinois Home Contact
UI Plants Woody Ornamentals
Advanced Search
 Botanical Terminology Tutorial
Leaf Arrangement
Leaf Shape
Leaf Margin
Leaf Apex
Leaf Base
Take a Quiz


Leaf Bases: Acute
Click on the image for a larger view of the photo.
Click on the name for detailed information on the plant.

Enlarge Photo
Apple Serviceberry
(Amelanchier x grandiflora)

Enlarge Photo
Common Sweetshrub
(Calycanthus floridus)

Enlarge Photo
Common Periwinkle
(Vinca minor)

Enlarge Photo
Gray Birch
(Betula populifolia)



Acute Leaf Base

An angle that is less than 90º with straight lines and is wider than cuneate. It is roughly equivalent to wide cuneate. The term acute is more commonly used for apices.

The leaf base of the Apple Serviceberry can be described as either wide cuneate or acute.

Botanical Terminology > Leaf Bases > Acute  


2005 Gary J. Kling and Laura L. Hayden, University of Illinois at Urbana-Champaign.
External sites are not endorsed by the University of Illinois.

Notes about this tutorial.