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Pin Oak, when compared to Scarlet Oak, is very similar in many characteristics, including the shape of its leaves. However, it is known as the Oak with leaves that have U-shaped "open" and spreading sinuses between the lobes, as compared to the "closed" C-shaped sinuses of Scarlet Oak.
How to recognize pin oak. It’s a member of the red oak group, with bristle-tipped lobes. Pin oak has especially narrow and deep lobes. Flowers and fruits. Oaks are monoecious, having separate male and female flowers, both types on the same tree. Here’s a flowering branch. The male flowers are in drooping catkins.
There are over 100 tree species that can be found in Ohio’s for-ests. This guide is a tool that you can use to identify some of the more common and interesting forest trees of Ohio. The focus of this guide is leaf characteristics, but other characteristics such as bark and fruit are used occasionally to separate trees with similar leaves.
Watch the videos below to learn more about the characteristics used to identify a tree species. Be sure to check this page every other Tuesday for a new video!
This pocket guide is a valuable tool for the novice student, woodland owner, or bird watcher for identifying 88 of Ohio's tree species. Diagrams and examples of leaf arrangements, a glossary of terms, and steps to utilizing this key are included to get the reader started in the right direction.
First and foremost, we have LEAF ARRANGEMENT, which tells us how many leaves are attached at each NODE (i.e., the point along the stem where leaves are attached). Left: alternate (hackberry). center: opposite (honeysuckle). Right: whorled (buttonbush)
LEAF: Alternate and simple with coarse serrations on their slightly undulating margins, 2-4 inches long. Fall color from yellow-green to a rich golden-brown; older trees hold dead leaves throughout winter on lower, inte - rior branches while young trees hold virtually all of their dead leaves until spring (making them stand out in the
