Clematis is a genus of about 300 species within the buttercup family, Ranunculaceae. - Wikipedia
There are over thirty varieties of Clematis – divided into three groups, early flowering, early large flowered Clematis and late flowering Clematis, with many hybrids and cultivars. They are known by many names including traveller’s joy, old man’s beard, virgin’s bower, leatherflower and vase vine.
Clematis are perennials and said to grow best in cool, moist, well-drained soil in full sun. This perennial flowering vine plant comes in many colours, shapes and sizes. They attract bees, butterflies, and hummingbirds.
Some photos of the Clematis flower from the Flower Dome. There might be other cultivars and hybrids in the dome. However, I didn’t know anything about Clematis until I started looking for information on this flower. I will keep my eyes open for other varieties of this flower in my next visit.