In the modern world we tend to think of grass as what grows on lawns, particularly in front of homes, everywhere.
In fact, grass is a very broad term of a type of hollow plant, that includes bamboos and corn.
Cock`s-foot grass Dactylis glomerata is another grass, native throughout Europe and parts of Asia, introduce to North America.
As seen around Stow Lake in Golden Gate Park
3 August 2022.