,
Argentina.
P. baroni can reach a total length (including tail) of about . The males are smaller than the females. The length of the tail is about 30% of the total body length. This species is the longest known in the genus
Philodryas. The head is small and elongated, with an extension of the rostral scale, forming a small flexible nasal protuberance more developed in males. The coloration of the body is rather variable. Usually it is green, but there are found specimens tending to blue or brown. The pattern can be uniform or with black longitudinal stripes on the back and on the sides, on the anterior third of the body. The ventral area under the black lateral lines can be white or yellowish-white, sometimes with shades of green or blue. ==Behavior==