From Ohio History Central
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Congress Green Cemetery also contains Running Buffalo Clover, an endangered plant. Its scientific name is Trifolium stoloniferum. The plant is named Running Buffalo Clover because of its three leaf-clover shape and because adult stems dispatch runners to create new plants. The plant produces white flowers that are approximately one inch across. Buffalo, which once inhabited Ohio, ate the clover and helped to disperse the plant's seeds. As buffalo declined and farming occurred, the Running Buffalo Clover became endangered. Originally, the plant existed in Ohio, West Virginia, Kentucky, Indiana, Illinois, Missouri, Kansas and Arkansas. Today, Running Buffalo Clover exists only in Ohio, West Virginia, Indiana, Kentucky, and Missouri.