Helictotrichon

…fescue prairie with Festuca and Helictotrichon; in the west, to a short-grass steppe dominated by Bouteloua gracilis and Buchloe dactyloides; and to the east, to a tall-grass prairie with the bluestem grasses Andropogon gerardii and A. scoparium. Trees and shrubs were generally absent, but a large variety of herbaceous plants…