Query: Grasses of both Canada and the California desert regions
Domain: plants
Relevant documents:
Elymus trachycaulus
Muhlenbergia richardsonis
Sporobolus airoides
Aristida purpurea
Phleum alpinum
Muhlenbergia andina
Munroa squarrosa
Elymus elymoides
Hilaria jamesii
Bouteloua gracilis
Spartina gracilis