M121
POLAR DOMAIN
Tundra Mountains
Polar desert
-111
Icecap Division
Glacial ice
M124
Oceanic meadow - heath
-121
Tundra Division
Ice and stoney deserts
M122
Tundra - polar desert
-123
Tundras
M123
Tundra - meadow
-122
Arctic tundras
M131
Subarctic Mountains
Open woodland - tundra
-131
Subarctic Division
Forest-tundras and open woodlands
M132b
Tayga - tundra, high
M132a
Tayga - tundra, medium
M242b
HUMID TEMPERATE DOMAIN
Marine Mountains
Forest - meadow, high
M242a
Forest - meadow, medium
-132
Tayga (boreal forests)
-  0
Lake
M211b
Warm Continental Mountains
Mixed forest - coniferous forest - tundra, high
M211a
Mixed forest - coniferous forest - tundra, medium
M331
DRY DOMAIN
Temperate Steppe Mountains
Forest-steppe - coniferous forest - meadow - tundra
-251
Prairie Division
Forest-steppes and prairies
-211
Warm Continental Division
Mixed deciduous-coniferous forests
-331
Temperate Steppe Division
Steppes
-332
Dry steppes
-241
Marine Division
Mixed forests
M241
Deciduous or mixed forest - coniferous forest - meadow
M332
Steppe - coniferous forest - tundra
-221b
Hot Continental Division
Broadleaved forests, continental
-341
Temperate Desert Division
Semideserts
-221a
Broadleaved forests, oceanic
M334
Steppe - open woodland - coniferous forest - alpine meadow
M261
Mediterranean Mountains
Mixed forest - coniferous forest - alpine meadow
M333
Steppe - coniferous forest
-263
Mediterranean Division
Redwood forests
M221
Hot Continental Mountains
-342
Semideserts and deserts
-261
Dry steppe
-231
Subtropical Division
Broadleaved-coniferous evergreen forests
M341
Temperate Desert Mountains
Semidesert - open woodland - coniferous forest - alpine meadow
-232
Coniferous-broadleaved semi-evergreen forests
-262
Mediterranean hardleaved evergreen forests, open woodlands and shrub
M262
Mediterranean woodland or shrub - mixed or coniferous forest - steppe or meadow
-323
Tropical/Subtropical Desert Division
Deserts on sand
-311
Tropical/Subtropical Steppe Division
Coniferous open woodland and semideserts
R
Lower Mississippi Riverine Forest Province
Riverine forest
M311
Tropical/Subtropical Steppe Mountains
Steppe or semidesert - mixed forest - alpine meadow or steppe
-314
Shortgrass steppes
M222
Broadleaf forest - meadow
-313
Steppes and shrubs
-252
Prairies and savannas
M263
Shrub or woodland - steppe - meadow
M231
Subtropical Mountains
Mixed forest - meadow
-321
M321
Tropical/Subtropical Desert Mountains
Semidesert - shrub - open woodland - steppe or alpine meadow
-322
Oceanic semideserts
-411
HUMID TROPICAL DOMAIN
Savanna Division
Open woodlands, shrubs, and savannas
M322
Desert or semidesert - open woodland or shrub - desert or steppe
M411
Savanna Mountains
Open woodland - deciduous forest - coniferous forest - steppe or meadow
-312
M412
Forest - steppe
-421
Rainforest Division
Semi-evergreen and evergreen forests
M421
Rainforest Mountains
Evergreen forest - meadow or paramos
-412
Semi-evergreen forests
-413
Deciduous forests
-422
Evergreen forests