I lean towards S. flava. Possible variation atropurpurea. I am raising S. rubra ssp. rubra seedlings right now, and they maintain thier green coloration and veining. The hood of the seedlings is longer as well. Though hard to tell now, by mid spring to late summer next year, you should know for sure. My S. rubra seedlings are Brunswick County, North Carolina plants from Shallote. Possibly the red coloration might be due to time of year of the photo. Just when was this photo taken? S. flava var. atropurpurea are supposed to have been extirpated fron North Carolina, but as far as I am concerned, if seed fell anywhere they existed, they may yet still exist in the habitat. Good luck, Ozzy. Keep me informed as to what you come up with.