The hybrid wichuriana “Dr. Huey” is the most commonly-used rootstock for propagation of roses by bud grafting. When gardeners are careless about removing suckers, the understock will take over. The result is a brilliant but brief display of bright red blossoms at the beginning of the rose season. This example was blooming in a Wichita garden in mid-May, but you can find them everywhere grafted roses are grown.
I got out to the botanical garden last night for the first time in about two weeks.
There is more at my Flickr page.