Simplify the following text for a Grade 9 native English-speaking person.
Original: 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 .