This is another, more photo-realistic 3d lawn grass for archviz works (used a texture for better output). It was created using Multiscatter plugin.
The model only consists of 3d details (24 grass blades) and no any opacity maps were used.
The grass model is perfectly seamless and tileable. You just need multiscatter plugin.
The current ground's dimension is 20mX10.3, but you can change it's size or create your custom ground. Just click on a new surface and get result immediately. Also you can use UVMapping coordinates of the default land model (UVW Modifier is not collapsed).
All settings are saved. In order to get different output, you will need to change the max count of the grass blades (if there is huge lands on your project). The default count is 950000 (for 24 blades).
Grass map: 7000x4822 pixels
Ground map: 4000x4000 pixels
Mask map: 6000x5842 pixels
File formats: 3ds max 2011/ V-Ray 3.00/ Corona 1.3
External: fbx/ obj (with correct UV mapping)
System unit: mm (compatible with cm)