Clematis, Queen of Vines Horticulture Clematis, Queen of Vines Clematis vines are woody members of the buttercup family Ranunculaceae . The colorful portion of the flowers is made up of sepals instead of petals.
Petals are absent.
Flowers may be single, double, or even triple. All colors are available. The one drawback of the Queen of Vines is their lack of fragrance in the large flowered varieties. Small-flowered species offer a range of fragrances from almond to hot cocoa. Besides having attractive flowers, clematis seedheads are attractive as well.