ONLINE IMAGE COLLECTION

Click on Image for JPG rendition
Image Title: Populus tremuloides (quaking aspen)
Image Credit: John Curtis, University of Wisconsin, Nels R. Lersten, Iowa State University
Intended End User: Teacher, Student
License Details: BSA - Terms for Image Use
Copyright held by: John Curtis and Nels Lersten, BSA
For Larger Version (click here)

About the Image

Populus tremuloides (quaking aspen) Laterally compressed petioles allow any breeze to cause leaves to vibrate or "quake". This movement makes it difficult for insects to land on or crawl on leaf surfaces.

National Science Foundation  Development Supported by the National Science Foundation