There are different ways to identify a tree -- by bark, fruit, and leaves. Identification by bark and fruit can be a little tricky, since it's difficult to pinpoint a tree by its bark, and presence of fruits is not always certain. Thus, for a layman, identifying a tree by studying its leaves proves to be easier.
Trees can be broadly classified as deciduous trees and coniferous trees. The easiest way to identify whether a tree is deciduous or coniferous is on the basis of its leaves. Leaves of a deciduous tree are broad, whereas that of a coniferous tree are extremely narrow and, at times, overlapping. After you have confirmed which tree you are looking at, the following steps will help you identify its common name.
Identifying Deciduous TreesIdentifying Coniferous Trees
Deciduous Trees
Before we begin the actual identification of deciduous trees, there are some key points to be kept in mind, as these form the basis of your identification guide. When you are observing a tree, first notice its branching style -- whether it is opposite or alternate (as shown in the figure). The next step is to determine whether the leaves are simple or compound (see figure). This is followed by the different types of edges of the leaves.
Once you are ready with these three points, you can proceed to narrow down the type of deciduous tree you are looking at.
Branching - Opposite or Alternate
Leaves - Simple or Compound
Simple Leaf
Compound Leaf
Simple Leaves -- The leaves which have a single leaf blade and are not divided into leaflets are called simple leaves.
Compound Leaves -- The leaves which have two or more leaflets having a common stalk or branch are called compound leaves.
Leaf Edges - Smooth, Lobed, or Toothed
Smooth
Lobed
Doubly-toothed
Singly-toothedBack
If branches are opposite and leaves are compound
Boxelder (3-5 leaflets)
Ashes (7-14 leaflets)
If branches are opposite and leaves are simple
MaplesBack If branches are alternate and leaves are compound
when leaves are singly compound
Walnutwhen doubly & singly compound
Honey Locust
If branches are alternate and leaves are simple
If the leaves are lobed
Oaks If the leaves are unlobed and doubly-toothed
... with an uneven leaf base
Elms... with an even leaf base
BirchesBack If the leaves are unlobed and smooth or singly-toothed
... with an uneven leaf base
Basswood
Hackberry... with an even leaf base
Cherry
Poplar
Willows
Aspens
BackConiferous Trees
Compared to deciduous trees, identification of coniferous trees is simpler. Again, begin with the type of leaf you are looking at -- needle-shaped or cone-shaped, and then proceed to the next step.
Leaves - Scales or needles
Scale-shaped
Needle-shaped
If the leaves are scale-shaped
Cedar
If the leaves are needle-shaped
... with a bunch of 2 to 5 needles
Pine... with a bundle of > 12 needles
Larch... with flat needles
Fir (single leaves)... with 4-sided needles
Spruce (single leaves)
Needless to say, tree identification, especially in a forest area, requires a lot of patience and an eye for detail. This, of course, does not make it any less of an interesting experience for nature lovers!
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