Clematis is a genus of 300 species within the buttercup family, Ranunculaceae. Their garden hybrids have been popular among gardeners, beginning with Clematis×jackmanii, a garden standby since 1862. They are mainly of Chinese and Japanese origin.
Jackman's clematis is so commonly grown that some gardeners despise it for its very popularity. But that's a shame. Popular plants generally gain their popularity for good reasons. Jackman's clematis is a vigorous yet compact vine with fabulous flowers. The fact that a great many people grow it does not detract from these superior qualities; on the contrary, it confirms them. Botanical Name is Clematis Jackmanii. The latter is the cultivar name and refers to 19th-century British nurseryman, George Jackman. The genus is indigenous to several regions across both the Northern Hemisphere and Southern Hemisphere.