Hair grass : A grass with very slender leaves or branches; as the Agrostis scabra, and several species of Aira or Deschampsia.

Example:


Taxonomy
Deschampsia, unranked, free encyclopedia, Poales, Grass, Articles lacking sources, hair grass, Angiosperms, Lepidoptera species, Antler Moth, Ambroise Marie François Joseph Palisot de Beauvois, genus, tussock grass, from Hair, search, Unsourced, Kingdom, Family.

Defination from the web:
Hair grass) Jump to: navigation, search. This article does not cite any references or sources. ... of wild plant in the grass family Poaceae, commonly known as hair grass or tussock grass. There are 30 to 40 species. ...