Perennial Ryegrass (Lolium perenne)
Perennial Ryegrass (Lolium perenne) is the most important amenity grass used in the UK. Having the reputation for not being resistant to drought this has today been overcome by continuous breeding work. Because of these improvements, perennial ryegrass is now one of the first to recover following dry periods. Improved winter hardiness and finer leaves means quicker spring recovery. These new type cultivars specifically bred for sports and amenity use, have an extremely prostate growth habit. Where a rapid establishment is vital they are undoubtedly the most suitable cultivars available in addition to their ability to withstand hard wear.
More information about Lolium perenne can be found on Wikipedia.