There might be some missing words there, Wells. We're not sure what you are asking.

Thank you Tugs, I think I understand. It only means a cluster of petals, but each cluster has a little stem attached to a larger stem? Paniculate.... The tag had nothing else so I don't know anymore to get more information...

I think you're asking whether Clematis paniculata and its varieties produce lots of flowers over a short space of time (around 6 weeks) and that's it. If that's what you're asking, yes, they all do the same thing - C. paniculata is a species clematis, just like C. montana, as opposed to the hybrids (like C.jackmanii). There are large flowered hybrids (prune group 2 types) where you get about 4 weeks of large flowers, then a pause, followed by another 4-8 weeks of smaller flowers, usually from early summer through to late autumn - they're probably in flower longer than any others. The hybrids do not make such large plants as species.

Wells, a panicle of flowers is a bushy, multi-branched cluster of flowers, usually oval or cone-shaped, overall. Clematis normally bloom in cymes--a large flower surrounded by smaller, younger blooms, as in clustering roses and mums--but in the more vigorous species, the cymes often group into panicles. C. paniculatum is just one of the many wild species that do this.

Thank you both for your wonderful explanations. Now I will keep them in a large barrel, They arrived rather dead look-ing. I now have to learn Species first, hybrids of species? is that correct. Species being name of family?

Thanks again

It goes species, then natural variety (so that might be C. paniculata alba, just as a for instance) then cultivated variety or cultivar (C paniculata 'Fancy Fred' - obviously I'm making the name up, but then so would the person who created the cultivar). Then there's cultivated hybrids of the genus clematis, sometimes of uncertain origin in terms of parentage, and those are the large flowered ones I mentioned before, so you get names like Clematis 'jackmanii' and Clematis 'Bees Jubilee' and so on. Clematis is a large and complicated genus of plants...

One thing to note though - clematis wilt does not affect species clematis, it only affects the large flowered hybrids...

Bamboo, thank you for taking your time to answer this. I have several book on Clematis, but your explanation is much clearer than any of them. Thanks again.