I did not harvest this plant, but the friends that did were told what they had by a native to these mountains. That person claimed that branch lettuce was becoming rare due to over harvesting. It can be eaten raw in a salad, or cooked in bacon fat.
Wild blueberries are probably slightly "before peak" at the Grayson Highlands. The picking is slow and the crop is light this year. None-the-less, the berries are still delicious!