Ecological Section Listing
| Powder River Basin |  |
| Alkali bulrush Marsh |
| Alkali sacaton Southern Plains grassland |
| American Silverberry / Western Wheatgrass Shrubland |
| Baltic rush wet Meadow |
| Basin big sagebrush / bluebunch wheatgrass Shrubland |
| Basin big sagebrush / western wheatgrass Shrubland |
| Beaked sedge Wet Meadow |
| Bebb's Willow Shrubland |
| Big bluestem - little bluestem Western Great Plains Herbaceous Vegetation |
| Birdfoot sagebrush - Gardner's saltbush Shrubland |
| Black greasewood / big sagebrush Shrubland |
| Black greasewood / bluebunch wheatgrass Shrubland |
| Black greasewood / Gardiner saltbush Shrubland |
| Black greasewood / western wheatgrass - (thickspike wheatgrass) Shrub Prairie |
| Black greaswood / Basin wildrye Shrubland |
| Black hawthorn Shrubland |
| Bluebunch wheatgrass - Sandberg's bluegrass Mixedgrass |
| Bluebunch wheatgrass - sideoats grama Mixedgrass |
| Bluebunch wheatgrass - thread-leaved sedge Mixed Prairie |
| Bluebunch wheatgrass - western wheatgrass Mixedgrass |
| Box elder / chokecherry Forest |
| Buffaloberry Shrubland |
| Chokecherry Shrubland |
| Common spikerush Wet Meadow |
| Creeping juniper / little bluestem Dwarf-shrubland |
| Creeping juniper / sun sedge Dwarf-shrubland |
| Fowl bluegrass Mixedgrass Prairie |
| Foxtail barley Meadow |
| Gardner's saltbush - big sagebrush Dwarf-shrubland |
| Gardner's saltbush / western wheatgrass Dwarf-shrubland |
| Green ash / chokecherry Forest |
| Idaho fescue - sun sedge Mixedgrass Prairie |
| Idaho fescue - western wheatgrass Mixedgrass Prairie |
| Inland saltgrass Saline Prairie |
| Little bluestem - plains muhly Herbaceous Vegetation |
| Little bluestem - sun sedge bunchgrass Prairie |
| Long-leaved Sage - Prairie Sandreed Sparse Vegetation |
| Mountain big sagebrush / bluebunch wheatgrass Shrubland |
| Narrowleaf cottonwood / red-oiser dogwood Forest |
| Nebraska sedge Wet Meadow |
| Needle-and-thread - blue grama Mixedgrass Prairie |
| Needle-and-thread - sun sedge Mixedgrass Prairie |
| Needle-and-thread - threadleaf sedge Herbaceous Vegetation |
| Northern Great Plains little bluestem Prairie |
| Northern mannagrass Wet Meadow |
| Peach-leaf willow Woodland |
| Plains cottonwood / red-oiser dogwood Forest |
| Plains cottonwood / western snowberry Woodland |
| Ponderosa pine / big bluestem Woodland |
| Ponderosa pine / black hawthorn Woodland |
| Ponderosa pine / bluebunch wheatgrass Woodland |
| Ponderosa pine / chokecherry Forest |
| Ponderosa pine / common juniper Woodland |
| Ponderosa pine / creeping juniper Woodland |
| Ponderosa pine / Idaho fescue Woodland |
| Ponderosa pine / little bluestem Woodland |
| Ponderosa pine / Oregon grape Forest |
| Ponderosa pine / red-oiser dogwood Wetland Woodland |
| Ponderosa pine / Rocky Mountain juniper Woodland |
| Ponderosa pine / sun sedge Woodland |
| Prairie cordgrass - bulrush Wet Meadow |
| Prairie Cordgrass - Sedge Wet Meadow |
| Prairie Cordgrass Western Herbaceous Vegetation |
| Prairie sandreed - needle-and-thread Prairie |
| Prairie sandreed - sun sedge Prairie |
| Quaking aspen / Oregon grape Forest |
| Quaking aspen / Tall Forbs Forest |
| Red Saltwort Herbaceous Vegetation |
| Redtop Meadow |
| Reed canary-grass Wet Meadow |
| Rocky Mountain juniper / bluebunch wheatgrass Woodland |
| Rocky Mountain juniper / little-seed ricegrass Woodland |
| Sand bluestem - prairie sandreed Sand Prairie |
| Sand bluestem - sun sedge Sand Prairie |
| Sand dropseed Shrub Prairie |
| Sandbar willow Shrubland |
| Shrubby cinquefoil / Idaho fescue Shrub Herbaceous Vegetation |
| Silver sagebrush / needle-and-thread Shrub Prairie |
| Silver sagebrush / western wheatgrass Shrub Prairie |
| Silver sagebrush / western wheatgrass Shrubland |
| skunk bush sumac / bluebunch wheatgrass Shrub Prairie |
| skunk bush sumac / Idaho fescue Shrub Herbaceous Vegetation |
| Skunk bush sumac / little bluestem Shrub Prairie |
| skunk bush sumac / thread-leaved sedge Shrub Prairie |
| Softstem bulrush Temperate Herbaceous Vegetation |
| Succulent Hawthorn Shrubland |
| Tufted hairgrass Meadow |
| Water smartweed Wetland |
| Western reed Marsh |
| Western snowberry Shrubland |
| Western wheatgrass - blue grama - threadleaf sedge Herbaceous Vegetation |
| Western wheatgrass - foxtail barley Saline Prairie |
| Western wheatgrass - green needlegrass Mixedgrass |
| Western wheatgrass - inland saltgrass Saline Prairie |
| Western wheatgrass - spikerush spp. Mixedgrass Prairie |
| Western wheatgrass Mixedgrass Prairie |
| Winter Fat / needle-and-thread Dwarf-shrub Prairie |
| Wood's rose Shrubland |
| Wyoming big sagebrush / blue grama Shrubland |
| Wyoming big sagebrush / bluebunch wheatgrass Shrub Herbaceous Vegetation |
| Wyoming big sagebrush / bluebunch wheatgrass Shrubland |
| Wyoming big sagebrush / thread leaf sedge Shrubland |
| Wyoming big sagebrush / western wheatgrass Shrubland |
| Yucca / prairie sandreed Shrub Prairie |
