I encountered that "wyoming green" during a stint with the park service in Yellowstone. Some kids were picking it, and we had to put a stop to it because of the park rules about picking things. The park biologists said it's north american hemp or "great plains hemp", and that it was the local loco weed. They used the term loco weed. It looked real similar to an indica, but the leaves were notably fuzzy. Try as I might, it did nothing to alter my consiousness.