| Central Pacific coastal forest(expression, forest, temperate, coniferous, ecoregion) |
| Central and Southern Cascades forest(expression, forest, temperate, coniferous, ecoregion) |
| Central and Southern mixed grasslands(expression, grassland, temperate, savanna, shrubland) |
| Central forest-grasslands transition(expression, grassland, temperate, savanna, shrubland) |
| Central hardwood forest(expression, forest, broadleaf, mixed, temperate) |
| Central tall grasslands(expression, grassland, temperate, savanna, shrubland) |
| Colorado Plateau shrublands(expression, desert, ecoregion, shrubland) |
| Colorado Rockies forest(expression, forest, temperate, coniferous, ecoregion) |
| Columbia Plateau(expression, grassland, temperate, savanna, shrubland) |
| Cook Inlet taiga(expression, forest, ecoregion, boreal, taiga) |
| Copper Plateau taiga(expression, forest, ecoregion, boreal, taiga) |
| Davis Highlands tundra(expression, ecoregion, zone, tundra) |
| East Central Texas forest(expression, forest, broadleaf, mixed, temperate) |
| Eastern Canadian Shield taiga(expression, forest, ecoregion, boreal, taiga) |
| Eastern Canadian forest(expression, forest, ecoregion, boreal, taiga) |
| Eastern Cascades forest(expression, forest, temperate, coniferous, ecoregion) |
| Eastern Great Lakes lowland forest(expression, forest, broadleaf, mixed, temperate) |
| Eastern forest-boreal transition(expression, forest, broadleaf, mixed, temperate) |
| Edwards Plateau savanna(expression, grassland, temperate, savanna, shrubland) |
| Flint Hills tall grasslands(expression, grassland, temperate, savanna, shrubland) |