1 Forest & Woodland Class
2 Shrub & Herb Vegetation Class
3 Desert & Semi-Desert Class
4 Polar & High Montane Scrub, Grassland & Barrens Class
5 Aquatic Vegetation Class
6 Open Rock Vegetation Class
7 Agricultural & Developed Vegetation Cultural Class

1.A Tropical Forest & Woodland Subclass
1.B Temperate & Boreal Forest & Woodland Subclass
2.A Tropical Grassland, Savanna & Shrubland Subclass
2.B Temperate & Boreal Grassland & Shrubland Subclass
2.C Shrub & Herb Wetland Subclass
3.A Warm Desert & Semi-Desert Woodland, Scrub & Grassland Subclass
3.B Cool Semi-Desert Scrub & Grassland Subclass
4.A Tropical High Montane Scrub & Grassland Subclass
4.B Temperate to Polar Alpine & Tundra Vegetation Subclass
5.A Saltwater Aquatic Vegetation Subclass
5.B Freshwater Aquatic Vegetation Subclass
6.A Tropical Open Rock Vegetation Subclass
6.B Temperate & Boreal Open Rock Vegetation Subclass
7.A Woody Agricultural Vegetation Cultural Subclass
7.B Herbaceous Agricultural Vegetation Cultural Subclass
7.C Herbaceous & Woody Developed Vegetation Cultural Subclass
7.D Agricultural & Developed Aquatic Vegetation Cultural Subclass

1.A.1 Tropical Dry Forest & Woodland Formation
1.A.2 Tropical Lowland Humid Forest Formation
1.A.3 Tropical Montane Humid Forest Formation
1.A.4 Tropical Flooded & Swamp Forest Formation
1.A.5 Mangrove Formation
1.B.1 Warm Temperate Forest & Woodland Formation
1.B.2 Cool Temperate Forest & Woodland Formation
1.B.3 Temperate Flooded & Swamp Forest Formation
1.B.4 Boreal Forest & Woodland Formation
1.B.5 Boreal Flooded & Swamp Forest Formation
2.A.1 Tropical Lowland Grassland, Savanna & Shrubland Formation
2.A.2 Tropical Montane Grassland & Shrubland Formation
2.A.3 Tropical Scrub & Herb Coastal Vegetation Formation
2.B.1 Mediterranean Scrub & Grassland Formation
2.B.2 Temperate Grassland & Shrubland Formation
2.B.3 Boreal Grassland & Shrubland Formation
2.B.4 Temperate to Polar Scrub & Herb Coastal Vegetation Formation
2.C.1 Tropical Bog & Fen Formation
2.C.2 Temperate to Polar Bog & Fen Formation
2.C.3 Tropical Freshwater Marsh, Wet Meadow & Shrubland Formation
2.C.4 Temperate to Polar Freshwater Marsh, Wet Meadow & Shrubland Formation
2.C.5 Salt Marsh Formation
3.A.1 Tropical Thorn Woodland Formation
3.A.2 Warm Desert & Semi-Desert Scrub & Grassland Formation
3.B.1 Cool Semi-Desert Scrub & Grassland Formation
4.A.1 Tropical High Montane Scrub & Grassland Formation
4.B.1 Temperate & Boreal Alpine Tundra Formation
4.B.2 Polar Tundra & Barrens Formation
5.A.1 Floating & Suspended Macroalgae Saltwater Vegetation Formation
5.A.2 Benthic Macroalgae Saltwater Vegetation Formation
5.A.3 Benthic Vascular Saltwater Vegetation Formation
5.A.4 Benthic Lichen Saltwater Vegetation Formation
5.B.1 Tropical Freshwater Aquatic Vegetation Formation
5.B.2 Temperate to Polar Freshwater Aquatic Vegetation Formation
6.A.1 Tropical Cliff, Scree & Other Rock Vegetation Formation
6.B.1 Temperate & Boreal Cliff, Scree & Other Rock Vegetation Formation
7.A.1 Woody Horticultural Crop Cultural Formation
7.A.2 Forest Plantation & Agroforestry Cultural Formation
7.A.3 Woody Wetland Horticultural Crop Cultural Formation
7.B.1 Row & Close Grain Crop Cultural Formation
7.B.2 Pasture & Hay Field Crop Cultural Formation
7.B.3 Herbaceous Horticultural Crop Cultural Formation
7.B.4 Fallow Field & Weed Vegetation Cultural Formation
7.B.5 Herbaceous Wetland Crop Cultural Formation
7.C.1 Lawn, Garden & Recreational Vegetation Cultural Formation
7.C.2 Other Developed Vegetation Cultural Formation
7.C.3 Developed Wetland Vegetation Cultural Formation
7.D.1 Agricultural Aquatic Vegetation Cultural Formation
7.D.2 Developed Aquatic Vegetation Cultural Formation

  Class
      Subclass
          Formation
              Division / Cultural Subformation
                  Macrogroup / Cultural Group
                      Group / Cultural Subgroup
                          Alliance / Cultural Type
                              Association / Cultural Subtype