Wyoming Native Plant Society - This is the official native plant society for the state of Wyoming. They offer a number of resources through their website, including activity information, membership sign-up, and access to their quarterly newsletter. Be sure to check out this site to get help in creating your own small gardens and landscapes.
Wyoming Wildflowers - On this site, you'll find a photo album of garden design photos featuring a number of wildflowers found growing in Wyoming. Each picture is identified by its common name and, for most of the plants included here, you'll find a couple of pictures to show you what the flowers look like in different areas and at different angles.
USDA Plants Database: Wyoming - This site, created by the U.S. Department of Agriculture, contains a list of plants found in the state of Wyoming, listed by both their scientific and common names. Within individual pages, you'll find more detailed information about the plants to help with any landscaping or xeriscaping project you might be interested in pursuing, including pictures showing the plant in the wild and a distripution map of where this plant is typically found.