Japanese Maple with a "Speed Tree" Style textures.
I edited the leaves and branch plane's Vertex Normals to point outward to reduce sharp shadows when walking around the model. I first did this in Maya but ended up using the SlideTools 3DSMAX plugin because of easier export options.
This is LOD_0 with placed individual leaves onto branch planes mixed with branch planes with leaves displayed.
LOD_1 would be the removal of some single leaf planes and all branch planes to become branch with leaves displayed.
LOD_2 would be the removal of all single leaf planes.
LOD_3 would be the removal of some branch planes, and drop in trunk polys.
The tree bark was made entirely in Substance Designer and is tileable.