Achnatherum calamagrostis is a clump-forming perennial grass native to mountainous Europe and Asia. It has narrow, grayish-green leaves and develops airy, silvery-white.
Above information is sourced from Wikipedia
© Giovanni Perico (CC-BY-NC)
© Giovanni Scarmoncin
© (c) Ljaž, some rights reserved (CC BY)
© Carlos Morate
© (c) Ana Garcia, some rights reserved (CC BY)