| lexicalization | eng: Ecoregions in the United States |
| subclass of | e/Ecoregion |
| has instance | e/Appalachian mixed mesophytic forests |
| has instance | e/Appalachian-Blue Ridge forests |
| has instance | e/Blue Mountains (ecoregion) |
| has instance | e/California interior chaparral and woodlands |
| has instance | e/Cascades (ecoregion) |
| has instance | e/Central U.S. hardwood forests |
| has instance | e/Coast Range (ecoregion) |
| has instance | e/Columbia Plateau (ecoregion) |
| has instance | e/Eastern Cascades Slopes and Foothills (ecoregion) |
| has instance | e/Flatwoods |
| has instance | e/Florida scrub |
| has instance | e/Katuah bioregion |
| has instance | e/Klamath Mountains (ecoregion) |
| has instance | e/List of ecoregions in North America (CEC) |
| has instance | e/List of ecoregions in Oregon |
| has instance | e/List of ecoregions in the United States (EPA) |
| has instance | e/List of ecoregions in the United States (WWF) |
| has instance | e/Lists of ecoregions in the United States |
| has instance | e/Mississippi lowland forests |
| has instance | e/Northern Basin and Range (ecoregion) |
| has instance | e/Ozark Mountain Forests |
| has instance | e/Piedmont bioregion |
| has instance | e/Piney Woods |
| has instance | e/Sierra Nevada subalpine zone |
| has instance | e/Snake River Plain (ecoregion) |
| has instance | e/South Florida rocklands |
| has instance | e/Tamaulipan mezquital |
| has instance | e/Willamette Valley (ecoregion) |
| has instance | e/Willamette Valley forests |
| has instance | e/fr/Colorado Plateaus |
| has instance | e/fr/Eastern Cascades forests |
| has instance | e/fr/Plateau de broussailles du Colorado |
| has instance | e/fr/Puget lowland forests |
| has instance | e/fr/Snake-Columbia shrub steppe |
| has instance | e/fr/South Central Rockies forests |