Northern Rough Greensnake
This is a long and slender snake often seen in the Ozarks. It is light green above and has a white or yellowish belly. Scales on the back have small ridges or keels, making it feel rough to the touch. Dead specimens turn bluish.
Similar species: The smooth greensnake (O. vernalis) used to live in the northern parts of our state, but it has not been seen in Missouri in several decades. A Species of Conservation Concern, it is considered extirpated from our state. The easiest way to tell the two greensnakes apart is by touch: The scales on the back of rough greensnakes feel rough; those on the back of smooth greensnakes feel smooth.