It is a grass texture. It can be imported as a plane. 2 planes can also be put together to make a cross to mimic bunch grass. Then the planes can be scattered among the meadow. The last picture shows the result of such scattering method.
With the sbsar, tremendous varieties of grass can be generated with different colors and orientations.
Check out this free PBR texture at
https://www.texturecan.com/details/238/