Ecological Section Listing
| Powder River Basin |  |
| Acer negundo / Prunus virginiana Forest |
| Agrostis stolonifera Herbaceous Vegetation |
| Andropogon gerardii - Schizachyrium scoparium Western Great Plains Herbaceous Vegetation |
| Andropogon hallii - Calamovilfa longifolia Herbaceous Vegetation |
| Andropogon hallii - Carex inops ssp. heliophila Herbaceous Vegetation |
| Artemisia cana / Hesperostipa comata Shrub Herbaceous Vegetation |
| Artemisia cana / Pascopyrum smithii Shrubland |
| Artemisia cana ssp. cana / Pascopyrum smithii Shrub Herbaceous Vegetation |
| Artemisia longifolia - Calamovilfa longifolia Sparse Vegetation |
| Artemisia pedatifida - Atriplex gardneri Dwarf Shrubland |
| Artemisia tridentata ssp. tridentata / Pascopyrum smithii Shrubland |
| Artemisia tridentata ssp. tridentata / Pseudoroegneria spicata Shrub Herbaceous Vegetation |
| Artemisia tridentata ssp. vaseyana / Pseudoroegneria spicata Shrubland |
| Artemisia tridentata ssp. wyomingensis / Bouteloua gracilis Shrubland |
| Artemisia tridentata ssp. wyomingensis / Carex filifolia Shrubland |
| Artemisia tridentata ssp. wyomingensis / Pascopyrum smithii Shrub Herbaceous Vegetation |
| Artemisia tridentata ssp. wyomingensis / Pseudoroegneria spicata Shrub Herbaceous Vegetation |
| Artemisia tridentata ssp. wyomingensis / Pseudoroegneria spicata Shrubland |
| Atriplex gardneri / Artemisia tridentata Dwarf Shrubland |
| Atriplex gardneri / Pascopyrum smithii Dwarf Shrubland |
| Calamovilfa longifolia - Carex inops ssp. heliophila Herbaceous Vegetation |
| Calamovilfa longifolia - Hesperostipa comata Herbaceous Vegetation |
| Carex nebrascensis Herbaceous Vegetation |
| Carex utriculata Herbaceous Vegetation |
| Crataegus douglasii Shrubland |
| Crataegus succulenta Shrubland |
| Dasiphora fruticosa / Festuca idahoensis Shrub Herbaceous Vegetation |
| Deschampsia cespitosa Herbaceous Vegetation |
| Distichlis spicata Herbaceous Vegetation |
| Elaeagnus commutata / Pascopyrum smithii Shrubland |
| Eleocharis palustris Herbaceous Vegetation |
| Festuca idahoensis - Carex inops ssp. heliophila Herbaceous Vegetation |
| Festuca idahoensis - Pascopyrum smithii Herbaceous Vegetation |
| Fraxinus pennsylvanica / Prunus virginiana Forest |
| Glyceria borealis Herbaceous Vegetation |
| Hesperostipa comata - Bouteloua gracilis - Carex filifolia Herbaceous Vegetation |
| Hesperostipa comata - Carex filifolia Herbaceous Vegetation |
| Hesperostipa comata - Carex inops ssp. heliophila Herbaceous Vegetation |
| Hordeum jubatum Herbaceous Vegetation |
| Juncus balticus Herbaceous Vegetation |
| Juniperus horizontalis / Carex inops ssp. heliophila Dwarf Shrubland |
| Juniperus horizontalis / Schizachyrium scoparium Dwarf-shrubland |
| Juniperus scopulorum / Piptatherum micranthum Woodland |
| Juniperus scopulorum / Pseudoroegneria spicata Woodland |
| Krascheninnikovia lanata / Hesperostipa comata Dwarf Shrubland |
| Pascopyrum smithii - Bouteloua gracilis - Carex filifolia Herbaceous Vegetation |
| Pascopyrum smithii - Distichlis spicata Herbaceous Vegetation |
| Pascopyrum smithii - Eleocharis spp. Herbaceous Vegetation |
| Pascopyrum smithii - Nassella viridula Herbaceous Vegetation |
| Pascopyrum smithii Herbaceous Vegetation |
| Pascopyrum smithii -Hordeum jubatum Herbaceous Vegetation |
| Phalaris arundinacea Western Herbaceous Vegetation |
| Phragmites australis Temperate Herbaceous Vegetation |
| Pinus ponderosa / (Andropogon gerardii, Schizachyrium scoparium) Woodland |
| Pinus ponderosa / Carex inops ssp. heliophila Woodland |
| Pinus ponderosa / Cornus sericea Woodland |
| Pinus ponderosa / Crataegus douglasii Woodland |
| Pinus ponderosa / Festuca idahoensis Woodland |
| Pinus ponderosa / Juniperus communis Woodland |
| Pinus ponderosa / Juniperus horizontalis Woodland |
| Pinus ponderosa / Juniperus scopulorum Woodland |
| Pinus ponderosa / Mahonia repens Forest |
| Pinus ponderosa / Prunus virginiana Forest |
| Pinus ponderosa / Pseudoroegneria spicata Woodland |
| Pinus ponderosa / Schizachyrium scoparium Woodland |
| Poa palustris Herbaceous Vegetation |
| Polygonum amphibium Herbaceous Vegetation |
| Populus angustifolia / Cornus sericea Woodland |
| Populus deltoides / Cornus sericea Forest |
| Populus deltoides / Symphoricarpos occidentalis Woodland |
| Populus tremuloides / Mahonia repens Forest |
| Populus tremuloides Tall Forbs Forest |
| Prunus virginiana Shrubland |
| Pseudoroegneria spicata - Bouteloua curtipendula Herbaceous Vegetation |
| Pseudoroegneria spicata - Carex filifolia Herbaceous Vegetation |
| Pseudoroegneria spicata - Pascopyrum smithii Herbaceous Vegetation |
| Pseudoroegneria spicata - Poa secunda Herbaceous Vegetation |
| Rhus trilobata / Carex filifolia Shrub Herbaceous Vegetation |
| Rhus trilobata / Festuca idahoensis Shrub Herbaceous Vegetation |
| Rhus trilobata / Pseudoroegneria spicata Shrub Herbaceous Vegetation |
| Rhus trilobata / Schizachyrium scoparium Shrub Herbaceous Vegetation |
| Rosa woodsii Shrubland |
| Salicornia rubra Herbaceous Vegetation |
| Salix amygdaloides Woodland |
| Salix bebbiana Shrubland |
| Salix exigua Temporarily Flooded Shrubland |
| Sarcobatus vermiculatus / Artemisia tridentata Shrubland |
| Sarcobatus vermiculatus / Atriplex gardneri Shrubland |
| Sarcobatus vermiculatus / Leymus cinereus Shrubland |
| Sarcobatus vermiculatus / Pascopyrum smithii Shrub Herbaceous Vegetation |
| Sarcobatus vermiculatus / Pseudoroegneria spicata Shrubland |
| Schizachyrium scoparium - Bouteloua (curtipendula, gracilis) / Carex filifolia Herbaceous Vegeta |
| Schizachyrium scoparium - Carex inops ssp. heliophila Herbaceous Vegetation |
| Schizachyrium scoparium - Muhlenbergia cuspidata Herbaceous Vegetation |
| Scirpus maritimus Herbaceous Vegetation |
| Scirpus tabernaemontani Temperate Herbaceous Vegetation |
| Shepherdia argentea Shrubland |
| Spartina pectinata - Carex spp. Herbaceous Vegetation |
| Spartina pectinata - Scirpus pungens Herbaceous Vegetation |
| Spartina pectinata western Herbaceous Vegetation |
| Sporobolus airoides Herbaceous Vegetation |
| Sporobolus cryptandrus Shrub Herbaceous Vegetation |
| Symphoricarpos occidentalis Shrubland |
| Yucca glauca / Calamovilfa longifolia Shrub Herbaceous Vegetation |
