Forest ground
Vray version of plants are in the archive.
There is a 28m * 21m plane in the scene with 4 different corona scatter.
Plane and scattered objects are not FBX and OBJ files, just the main plants, grasses and flowers.
corona scatter settings screen shots in archive
changing the size of scattering maps gives you different results.
polys: 127,713
verts: 137.053