A dichotomous key is a tool that allows the user to determine the identity of items in the natural world, such as trees, wildflowers, mammals, reptiles, rocks, and fish.
Keys consist of a series of choices that lead the user to the correct name of a given item.
Therefore, dichotomous keys always give two choices in each step. Choose one of the two items by clicking on one of the white boxes. After a choice is made in the first step, a second set of choices will appear. Keep clicking on the boxes that best describe the characteristics of the tree you are trying to identify. Eventually your choices will lead you to the name of a tree genus .