Defining the characteristics of individual leaves is part of tree morphology, or the study of the physiological structure of trees. All trees have a leaf structure that can be classified as either ...

Steve Nix is a member of the Society of American Foresters and a former forest resources analyst for the state of Alabama. Leaf shapes play an important role in tree identification, providing key ...

A little knowledge of botany can be helpful, even if you’re an amateur gardener. Here are a few things you should know about what happens in the fall. By Margaret Roach What’s going on out there — and ...

An apple may not fall far from the tree, but for a leaf, it depends on its shape. Elm or apple leaves — oval and symmetrical, with few protruding lobes — fall quickly, making them likely to end up ...