Not long ago, I met Winged Sumac (Rhus copallinum) growing on a dry rocky slope in Harriman State Park on the NY/NJ boarder, near Pine Meadow Lake. I had already been familiar with Smooth Sumac (Rhus glabra) and Staghorn Sumac (Rhus typhina), but Winged Sumac was new to me. Our acquaintance was in the fall season. The plant’s foliage had been ablaze with various shades of red, and I thought it would make a great painting.