Sources for More Information

Bulletin #53: What Tree Is That?—and Why?

Order your copy of What Tree Is That?, the award-winning key to identifying North American trees described in Tree City USA Bulletin #53.

Once you identify a tree, you will want more information about it. There are many excellent books to help, but here are some to consider:

Manual of Woody Landscape Plants by Michael A. Dirr
Native Trees for North American Landscapes by Guy Sternberg with Jim Wilson.
The Sibley Guide to Trees by David Allen Sibley.
Trees of North America: A Guide to Field Identification by C. Frank Brockman and Rebecca Marrilees.

More details on plant structure, especially leaf cells, can be found in the Online Biology Book.
The Online Biology Book is also a good place to look to gain a better understanding of flower parts and their functions.
The amazing world of lichens is nicely introduced at the University of California Museum of Paleontology’s website. For great photos of these plants that often make their homes on trees, see The Lichens of North America.
More websites on the benefits provided by trees can be found by searching online for “benefits of urban trees,” but here are three excellent starting points:

Last Updated: 03/25/19