Several types of grassland plant communities are found in the region. The area provides a botanical transition between the tallgrass prairie of more humid areas to the east, and the dryer shortgrass prairie to the west. Sandhills mixed-grass prairie covers the upland country south of the river, with plant species adapted to the sandy conditions.
Sand bluestem
Andropogon hallii Little bluestem
Schizachyrium scoparium Needleandthread
Stipa comata Junegrass
Koeleria macrantha Prairie sandreed
Calamovilfa longifolia Sand dropseed
Sporobolus asper Blue grama
Bouteloua gracilis Hairy grama
Bouteloua hirsuta Switchgrass
Panicum virgatum Louisiana sagewort
Artemisia ludoviciana Common milkweed
Asclepias syriaca Leadplant
Amorpha canescens Scaly blazing star
Liatris squarrosa Prairie spiderwort
Tradescantia occidentalis Yucca
Yucca glauca Wild rose
Rosa woodsii
Small remnant patches of tallgrass prairie can be found on moist river bottoms. Typical tallgrass prairie species found along the Niobrara River are highlighted in Table 2 below.
Big bluestem
Andropogon gerardii
Indiangrass
Sorghastrum nutans
Heath aster
Aster ericoides Annual sunflower
Helianthus annuus
Prairie coneflower
Ratibida columnifera