Cynanchum laeve

honey-vine climbing milkweed

Honey-vine climbing milkweed is a member of the Asclepiadaceae family. It produces schizocarp fruit that split open along one seam to release its fluff-coated seeds. The corolla contains 5 fused petals, radially arranged, with 5 fused carpels, making a syncarpous gynoecium. These flowers have an hypogenous orientation. The flower honey-vine climbing milkweed exhibits an umbellate cyme with around 30 flowers on each peduncle. This plant was found along a roadside near OSU campus.

Robinia pseudoacacia

black locust

Black locust is a native Ohio tree that produces legumes, making it a member of the Fabaceae family. Its many white flowers are arranged on catkins. It exhibits a unicarpellate gynoecium and is ovary is hypogenous. This tree was found near a roadside filled with invasive honeysuckle near campus.

Persicaria virginiana

American jumpseed

This interesting member of the buckwheat family, Polygonaceae, is known for its seed that jump off the stalk when fiddled with. It has small white flowers (not very evident on this specimen) that contain 4 petals and 4 sepals, both of which are fused. This flower shows a hypogenous ovary position and is unicarpellate. This specimen was found near a small stream near campus in a forested area. The fruits of this plant are achenes.

Pyrus calleryana

Callery pear

This specimen is a known invasive plant in this area. This specimen was found near a roadside, likely escaped from nearby residential landscaping. This tree is a member of the Rosaceae family, which exhibit a epigenous ovary position. The gorgeous flowers on this tree have 5 petals, 5 sepals and are acarpous. The fruit of this tree is a small inedible pome.


Echinaceae purpurea

purple coneflower

This specimen was found near a roadside near campus. A popular native plant, the purple coneflower is a member of the Asteraceae family. Its flowers contain both a ray flower and disk florets. These flowers of racemous inflorescence are unicarpellate with a hypogenous ovary position.

Solidago ohioensis

Ohio goldenrod

This very common native plant is a member of the Asteraceae family. This species, however, only have disk flowers with no ray flowers. This flower has a hypogenous ovary position and is unicarpellate. This plant was found just near the purple coneflower, near a roadside.

Works Cited

Braun, E. L. (1961). The woody plants of Ohio: Trees, shrubs and woody climbers, native, naturalized, and escaped.

Newcomb, L., & Morrison, G. (1977). Newcomb’s wildflower guide. New York: Little, Brown.