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Genus Agropyron
- perennial grasses of temperate and cool regions: wheatgrass; dog grass
Genus Agrostis
- annual or perennial grasses cosmopolitan in northern hemisphere: bent grass (so named from `bent' meaning an area of unfenced grassland)
Genus Alopecurus
- annual or perennial grasses including decorative and meadow species as well as notorious agricultural weeds
Genus Andropogon
- tall annual or perennial grasses with spikelike racemes; warm regions
Genus Arundo
- any of several coarse tall perennial grasses of most warm areas: reeds
Genus Bromus
- a genus of grasses of the family Gramineae