There are five broad ‘mire’ types in Wales: raised bog, blanket bog, floodplain valley mire, transition mire and marshy grassland. The first two of these are described in the sections below, with reference states and modified states described where relevant. Valley mires and transition mires are described in the section on ‘Fens and swamps’, and marshy grassland has been described in the section covering ‘Grasslands’.