Poa annua, or
annual meadow grass (known in America more commonly as
annual bluegrass or simply
poa), is a widespread low-growing turfgrass in temperate climates. Though
P. annua is commonly considered a solely annual plant due to its name, perennial bio-types do exist.
Poa (πόα) is Greek for "fodder". It is one of the sweetest grasses for green fodder, but less useful than hay. This grass may have originated as a hybrid between
Poa supina a
(Wikipedia)