I was amazed to see that Calochortus macrocarpus was still blooming on the Palouse Prairie: I cannot imagine how many of these magical flowers were plowed to provide us with Top Ramen noodles (the consistently high quality Palouse wheat is exported for this purpose to Japan). I would opt for the Calochortus myself!
It was startling to see Heuchera still blooming as well: this wonderful white species is H. cylindrica, which has a wide range in this region. It would not be found on the Palouse, except that Steptoe is a Quartzite outcrop on an otherwise deep bed of Loess loam with no Heucheras, of course.
Another shocker was this gentian--which might key out to G. affinis in some floras, but which I believe to be the true G. oregana. Gentiana affinis has much smaller, narrower flowers and narrower foliage as well: it is common in Colorado. This more closely resembles the high altitude, wet loving Gentiana calycosa, but it is adapted to drier, hotter habitats. ,but
What a great garden plant this would make in Colorado xeriscapes!