From the home screen you can search for a tree, navigate taxonomically or turn the textbook into "Trees of Your State or Province."

Learn terminology with a full morphology section that describes each plant part.

To understand natural variation within a species, there are many images of each plant part. Here you can find 16 different white oak leaves.

Learn about each ID feature with multiple images. There are 63 images for white oak (any of which might appear in the quiz).

Scroll down to see how white oak is different from commonly confused species. Here we see the difference between white and bur oak twigs.

When you have studied enough, check your progress. You can store up to 10 different quizzes.