Answer : 1. "Bharatpur and Tonk Forest division"
Explanation :

1. Khas grass or khus grass grows in Tonk, Sawai Madhopur, Bharatpur districts of Rajasthan.

2.Chrysopogon zizanioides, commonly known as poppy and khus, is a special grass native to India.

3. It is a densely clustered grass with long, thin and hard leaves and can grow up to 1.5 meters high.