Catalpa – Catalpa spp.
Very large heart-shaped leaves that are simple in complexity and entire in margin. Large slender pod-like fruits. This tree was found on a fencerow right next to a street in Columbus, OH. Leaves have a vegetable scent when crushed. https://lh2treeid.blogspot.com/2010/04/catalpa-bignonioides-common-catalpa.html
Ohio buckeye – Aesculus glabra
These leaves are opposite, palmately compound, and serrate. The fruits of this tree are poisonous nuts inside fleshy ovaries. This tree was found on a fence row in a fairly wet area in Lima, OH. The Peterson Shrubs and Trees field guide says that the twigs emit a foul odor when broken.
Black locust – Robinia pseudoacacia
These leaves are alternate, once compound, and entire. This tree was found on the edge of a forest in Lima, OH. Many native americans made their bows out of black locust. https://www.livescience.com/50732-black-locust-tree-shaped-the-united-states.html
Black walnut – Juglans nigra
Black walnut leaves are alternate, once compound, with serrate margins. This tree was found on the edge of a forest in a fairly moist area by a creek. A lot of furniture is made out of black walnut wood. forestry.ohiodnr.gov/Walnut
Hackberry – Celtis occidentalis
These leaves are alternate and simple in arrangement with a serrate margin. A good identifier for this tree is that the leaves are not centered on the petiole but are lopsided. This tree was found next to a creek in Lima, OH. As stated on http://forestry.ohiodnr.gov/hackberry, hackberry fruits are loved by birds.
American elm – Ulmus americana
The American elm has alternate leaves that are simple in arrangement and have doubly serrate leaves. It also has squishy bark. This tree was found in Lima, OH in a fencerow. Dutch Elm Disease is a disease spread by an insect that is affecting many elms. http://forestry.ohiodnr.gov/americanelm
Yellow poplar or Tuliptree – Liriodendron tulipifera
This tree has alternate leaves that are simple in arrangement. The leaves are large with notches and a long petiole that makes them flutter in the wind. This tree was found in Columbus, OH in a very open spot that was fairly dry. Tuliptree has a very straight trunk making it good for timber. http://forestry.ohiodnr.gov/tuliptree
Sycamore – Platanus occidentalis
This tree has alternate leaves that are simple in arrangement. They have three lobes with points. The bark of the sycamore has flaky white bark. This tree was found near a stream in Lima, OH. This tree can grow up to 80 ft. tall. http://forestry.ohiodnr.gov/sycamore.
Pin Oak – Quercus palustris
Pin Oak is part of the black oak group so its lobes are not rounded. These leaves are alternate and simple in arrangement. As mentioned previously they are lobed in a pointed manner. The branches at the bottom of the tree point downward, the branches in the middle point directly horizontally, and the branches at the top point upwards, distinguishing it from other oaks. This tree was found in an open area in Lima, OH. Pin Oaks require acidic soil. forestry.ohiodnr.gov/pinoak
Shingle oak – Quercus imbricaria
These leaves are alternate, simple in arrangement, and entire in margin. This is the only oak in the area that does not have lobes. This tree was found in Indian Creek, OH. Its wood is used for shingles for cabins, thus its name. http://forestry.ohiodnr.gov/shingleoak