Barley is one of the world's most grown cereals.
Most barley varieties have hulls that are attached to the grain, but there is also so called hulless barley, which is free threshing (the grains are easily detached from the glumes).
Barley is also classified according to the ear's structure into six row and two row barley.
Barley has many uses - beer brewing, as pearl barley or barley flour in food, and as animal feed. Different varieties are adapted to the different uses.
The ears of barley have long awns.