"Though I do not believe that a plant will spring up where no seed has been, I have great faith in a seed. Convince me that you have a seed there, and I am prepared to expect wonders." - Henry David Thoreau
As I suspected, this looked familiar. It is a page from the older Missouri Wildflower Nursery catalog - see their more complete listing with descriptions here: http://mowildflowers.net/Grasses_c_17.html, if you click on the photos, of each of the grasses they offer. They carry only plants with Missouri genes, so they can only thrive well east of the Rockies.