Perennial ryegrass Lolium perenne L., also called English ryegrass, is a coolseason perennial bunchgrass native to Europe, temperate Asia, and North Africa. It is widely distributed throughout the world, including North and South America, Europe, New Zealand, and Australia. Perennial ryegrass is important in foragelivestock systems. High palatability and digestibility make this species highly valued for dairy and sheep forage systems. As a result, it often is the preferred forage grass in temperate regions of the world.

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