tussock grass
noun
1- a grass which grows in tussocks丛生草。
1.1
- Genera Poa, Nassella, or Deschampsia, family Gramineae: several species, in particular D. cespitosa, a coarse fodder grass of the northern hemisphere.早熟禾属, 纳塞拉针茅属或发草属, 禾本科：数种, 尤指发草, 一种北半球的粗饲料草。