Any member of the very large grass family (Poaceae or Gramineae), though usually excluding larger members of the bamboo tribe of this family. Grasses are mostly tufted or creeping plants with narrow leaves and much-reduced flowers born in large inflorescences, consisting of spikelets each containing one to several florets. The cereals are grasses which produce edible grains (seeds) in large quantities. Lawns are almost invariably composed of grasses. Enthusiasts for ornamental grasses often include superficially similar plants such as the sedges (Cyperaceae) in their concept of ‘grass’.