Appendix D: Rangeland Ecological Sites and Associations Range Ecological Sites and Plant Associations Sedimentary Plains, East (MLRA 58AE)

Plant Associations Found Within Different Preci itation Zones 10 to 14 inch 15 to 19 inch

• Populus deltoides I Symphoricarpos 'parian Subirrigated • Salix exigua Temporarily Flooded

• Spartina pectinata Western Herba­ ceous Ve etatioa

. • Schoenoplectus pungens Herbaceous Vegetation Riparian Emergent • Phalaris arundinacea Herbaceous • Phalaris anmdinacea Herbaceous .· Vegetation' Vegetation'

• Eleocharis palustris Herbaceous • Eleocharis palustris Herbaceous Vegetation' Vegetation 1 • Symphoricarpos occidenta/is Shrub- • Symphoricarpos occidenta/is Shrub- land1 land1 Pacopyrum smithii - Hordeumjuba- Pacopymm smithii - Hordeumjuba- • • 1 tum Herbaceous Ve etatioa1 tum Herbaceous Ve etation

• Sarcobatus vermiculatus I smithii (Elymus lanceolatus) Shrub Herbaceous Ve etation

• Sarcobatus vermiculatus I Pseu- • Sarcobatus vermiculatus I Pseu- doroegneria spicata Shrubland doroegneria spicata Shrublaad • Sarcobatus vermiculatus - Artemisia • Sarcobatus vermiculatus - Artemisia tridentata Sbrubland1 tridenlata Shrubland1

• Carex nebrascensis Herbaceous Vege- • Carex nebrascensis Herbaceous tation1 Vegetation1 Carex lanuginosa - Calamagrostis Carex /anuginosa - Calamagrostis • • 1 stricta Herbaceous Vegetation 1 stricta Herbaceous Vegetation • Juncus balticus Herbaceous Vegeta- • Juncus balticus Herbaceous Vegeta- tion1 tion1

• Eleocharis palustris Herbaceous • Eleocharis palustris Herbaceous Vegetation 1 Vegetation' • Pacopyrum smith ii - Hordeum juba- • Pacopyrum smith ii - Hordeum juba- tum Herbaceous Vegetation' tum Herbaceous Vegetation' • Pacopyrum smilhii Herbaceous Vege- • Pacopyrwn smithii Herbaceous tation1 Ve etation1

Appendix D-1 Plant Associations Found Within Different Precipitation Zones

• Fraxinus pennsylvanica I Prunus vir­ giniana Forest • Pinus ponderosa I Prunus virginiana Forest • Arlemisia cana I Pascopyrum smithii • Arlemisia cana I Pascopyrum smithii Shrubland Shrubland • Arlemisia cana ssp. cana I Pascopy­ • Artemisia cana ssp. cana I Pascopy­ 1 rum smithii Shrub Herbaceous1 rum smithii Shrub Herbaceous • Symphoricarpos occidentalis Shrub­ • Symphoricarpos occidentalis Shrub­ land 1 land 1

• Pinus ponderosa I Carex inops ssp. heliophila Woodland • Pinus ponderosa I Fes/uca idahoen- sis Woodland • Pinus ponderosa I Pseudoroegneria • Pinus ponderosa I Pseudoroegneria spica/a Woodland spicata Woodland • Andropogon ha/Iii - Calamovilfa • Andropogon ha/Iii - Herbaceous Vegetation longifolia Herbaceous Vegetation • Calamovilfa longifolia - Hesperostipa coma/a Herbaceous Vegetation • Festuca idahoensis - Carex inops ssp. heliophila Herbaceous Vegetation • Schizachyrium scoparium - (curtipendula, gracilis) / Carex fi lifo- lia Herbaceous Vegetation • Schizachyrium scoparium - Carex • Schizachyrium scoparium - Carex inops ssp. heliophila Herbaceous inops ssp. heliophila Herbaceous Vegetation Vegetation • Hesperoslipa comata - Bouteloua • Hesperoslipa coma/a - - Carexfilifolia Herbaceous gracilis - Carexfilifolia Herbaceous Vegetation Vegetation

• Hesperostipa coma/a - Carex inops ssp. heliophila Herbaceous Vegeta- tion • Calamovilfa longifolia - Cares inops • Calamovilfa longifolia - Cares inops ssp. heliophila Herbaceous Vegeta- ssp. heliophila Herbaceous Vegeta- tion 1 tion 1 • Krascheninnikovia lanata I Hes- • Krascheninnikovia lanala I Hes- perostipa coma/a Dwarf-shrubland1 perostipa comata Dwarf-shrubland 1

Andropogon ha/Iii - Calamovilfa Ion i olia Herbaceous Ve etation

Appendix D-2 • Juniperus scopulorum I Piptatherum micranthum Woodland • Pinus ponderosa I Carex inops ssp. heliophila Woodland • Pinus ponderosa I Pseudoroegneria • Pinus ponderosa I Pseudoroegneria spicata Woodland spicata Woodland • Pinus ponderosa I Juniperus horizon- • Pinus ponderosa I Juniperus horizon- ta/is Woodland1 talis Woodland1 • Pascopyrum smithii - Bouteloua • Pascopyrum smithii - Bouteloua gracilis - Carexfilifolia Herbaceous gracilis - Carexfilifolia Herbaceous Vegetation Vegetation • Festuca idahoensis - Carex inops ssp. heliophila Herbaceous Vegetation • Pseudoroegneria spicala - Carexfili- • Pseudoroegneria spicata - Carex fili- folia Herbaceous Vegetation folia Herbaceous Vegetation • Pseudoroegneria spicata - Pascopy- • Pseudoroegneria spicala - Pascopy- rum smithii Herbaceous Vegetation1 rum smithii Herbaceous Vegetation1 • Artemisia tridentala ssp. wyomingen- • Artemisia tridentata ssp. wyomingen- sis I Pascopyrum smilhii Shrubland1 sis I Pasco ,yrum smithii Shrubland1

• Juniperus scopulorum I Pseu- doroegneria spicata Woodland • Artemisia tridenlata ssp. wyomingen- • Artemisia tridentata ssp. wyomingen- sis I Pascopyrum smithii Shrubland1 sis I Pascopyrum smithii Shrubland1 • Pascopyrum smithii - Boute/oua • Pascopynim smithii - Bouteloua gracilis - Carexfilifolia Herbaceous gracilis - Carexfilifolia Herbaceous Vegetation Vegetation • Atriplex gardnerii I Pascopynim • A triplex gardnerii I Pascopynim smith ii Dwarf-shrub land 1 smithii Dwarf-shrubland 1 • Pascopynim smithii Herbaceous • Pascopyrwn smithii Herbaceous Vegetation 1 Ve etation1

@inHilly

• Carex /anuginosa - Calamagrostis stricla Herbaceous Vegetation • Eriogonum pauciflorum - Gutierrezia sarothrae Badlands Sparse Vegeta- tion

IBadlands

Appendix D-3 Plant Associations Found Within Different Preci itation Zones 10 to 14 inch 15 to 19 inch

• Pinus ponderosa I Pseudoroegneria • Pinus ponderosa I Pseudoroegneria spicata Woodland spicata Woodland • Schizachyrium scoparium - Bouteloua (curtipendula gracilis) I Carex filifo­ /ia Herbaceous Vegetation

• Artemisia tridenla/a ssp wyomingen- • Arlemisia tridentata ssp wyomingen- sis I Pascopyrum smithii Shrub Her- sis I Pascopyn1m smithii Shrub Her- baceous Vegetation baceous Vegetation • Pseudoroegneria spicata - Bouteloua • Pseudoroegneria spicata - Bouteloua curti endula Herbaceous Ve etation curti endula Herbaceous Ve etation

• Hesperostipacomata - Carex filifolia • Hesperostipacomala - Carex filifolia Herbaceous Vegetation Herbaceous Vegetation • Rhus trilobata I Pseudoroegneria spi- • Rhus trilobata I Pseudoroegneria cata Shrub Herbaceous Vegetation spicata Shrub Herbaceous Vegeta- tion

• Artemisia tridentata ssp. wyomingen- • Artemisia tridenlata ssp. wyomin- sis I Pseudoroegneria spicata Shrub- gensis I Pseudoroegneria spicata land Shrubland • Rhus trilobata I Pseudoroegneria spi- • Rhus tri/obata I Pseudoroegneria caia Shrub Herbaceous Vegetation spicata Shrub Herbaceous Vegeta- tion

• A triplex confertifolia -Artemisia tri- • A triplex confertifolia - Artemisia lri- den/ala Shrubland den/ala Shrubland

1 Plant association provisionally assigned to this Ecological Site (and both precipitation zones); more info rmation needed to confirm placement.

Appendix D-4