text: Poa pratensis , also known as Smooth Meadow-grass , Common Meadow Grass , or Kentucky Bluegrass , is a perennial species of grass native to Europe , Asia , and northern Africa .
simplified: Poa pratensis , also Smooth Meadow-grass , Common Meadow Grass , or Kentucky Bluegrass , is a perennial species of the grass family Poaceae . It is native to Europe , Asia , and northern Africa .