DigitalVinyl wrote:

"David J Bockman" wrote:

I'm pretty sure Polish Spirit is in the Vitacella group, not Jackmanii...

Dave

Some literature on the net says that is now considered more of a
jackmanii. Although from what I've found the jackmanii is a much
larger flower from online descriptions. It certainly has a similar
appearance to jackmanii.

There is a slight relationship, but only through distant parentage. Jackmanii,
the first of the large flowering hybrids and pretty much the source of all the
LFH clematis currently available, was hybridized in 1858 by George Jackman
from Clematis laguinosa and a viticella, 'Atrorubens'. 'Polish Spirit' is
considered a small flowered clematis, not a LFH, and is listed by the
International and American Clematis Societies as a viticella hybrid, its exact
parentage undisclosed.

The number of tepals on most clematis is variable, ranging in number from 4-6,
sometimes as many as 8. You will often find flowers with varied numbers of
tepals growing on the same plant. It has nothing to do with size or maturity,
just an idiosyncracy of the plant.

pam - gardengal