What does the barley tree look like?

Barley is the mature seed of Coix, a gramineous plant, and it is an annual or perennial herb. It has the effect of digesting, dispelling dampness and dispelling cold. What does Coix look like? What does the barley tree look like? The barley stalk is 1-1.5 meters high and has 6-10 nodes. The long leaves are broad.