Durum wheat is used mainly for the manufacture of semolina which is made into macaroni, spaghetti and related products. About 8 varieties are grown on more than 2 million acres in this country - mainly in North Dakota and neighboring states. Spelt , Triticum spelta L. Spelt may be either winter or spring in habit and awned or awnless. The spike is long and narrow. Spikelets are two-kemeled and upright, closely pressed to the rachis or central stem.
Kernels are red, long, flattened, with a sharp tip and a narrow, shallow crease.
They remain enclosed in the glumes after threshing. Spelt was formerly grown in the United States on a small acreage for livestock feed but bas now almost disappeared from cultivation. Emmer , Triticum dicoccon Schrank. Emmer is one of the most ancient of cultivated cereals. It may be either winter or spring in habit.