Oak Oak Hickory Large - this Blended Background should be used with my Oak-Hickory wide cover spline or these trees which make up the spline: American_Elm_6, Blue_Oak_2, Emory_Oak_15m, Hickory_3, Red_Oak_10m, Scarlet_Oak_15m, Shagbark_Hickory-1_15m, Shagbark_Hickory-2_15m, sycamore_1, Undergrowth_6-2, Water_Hickory_2. I used built in British ground textures in building the backgrounds and they should match the background pretty well. There is a tutorial on my site about how to use this Blended Background to best advantage.