Williams Bon Chretien, also known as Williams, or Bartlett in the USA and Canada, is a pear variety that is not really suitable for very damp areas in the UK, due to its sensitivity to scab. In drier areas, the skin finish is appreciably better. Not self-fertile, it needs a pollinator. If picked too late, it will start rotting around the core. It should be picked by the end of August/early September. Quality fair to good.