BUNCHGRASS
bunchgrass, bunch grass
(noun) any of various grasses of many genera that grow in tufts or clumps rather than forming a sod or mat; chiefly of western United States
Source: WordNet® 3.1
Etymology
Noun
bunchgrass (countable and uncountable, plural bunchgrasses)
Any of various grasses of the family Poaceae that grow in clumps rather than forming a sod or mat.
Synonyms
• (clumping grasses): tussock grass
Hyponyms
• (clumping grasses): Brachypodium, Calamagrostis, Chionochloa, Deschampsia, Festuca, Heteropogon, Leymus, Melica, Muhlenbergia, Nassella, Stipa - selected genera
Source: Wiktionary