Karen, Regal Geranium is a common name. It isn't listed among the common names of all of the pelargoniums of the Elegance series. That's why you had trouble finding Elegance Imperial. As you can see from the link Lin posted, she searched for "Pelargonium Elegance" and found all of them. A search for "Geranium Elegance" also would have let you find all the plants of that series. It's best to confine your search terms to the essentials. Otherwise, you end up with a lot of results having little or no connection to the plant you want to find. A search by common name usually will be less productive than a search that includes all or part of the cultivar name.
