Small evergreen shrub of the Ranunculaceae family, 'Ovation' belongs to the Forsteri group, which gathers hybrids from New Zealand species. It was obtained by Huisman Boomkwekerij BV in Holland, selected in 2004 and introduced to commerce in 2011. Its direct parentage is Clematis marmoraria (s) x cartmanii 'Lunar Lass'.
It forms a compact cushion, with finely cut evergreen foliage, a dark and shiny green. The habit is spreading, reaching 40 cm in height at most.
The flowers are slightly mint-scented, opening pale green-yellow, then evolving to a greenish white with a light green-yellow base. The tepals number five to six, oval, slightly overlapping, with a diameter of 2.8 cm. The stamens are remarkable: yellow-green filaments at the base, white at the top, with green connectives and bright yellow-green anthers. In cultivation under our latitudes, flowering occurs in spring.
It requires very well-drained soil, a sunny to semi-shaded exposure, USDA zones 7 to 9. Suitable for rock gardens, walls, and elevated container cultivation.