The tag reads H. F. Young, but it doesn't look like there's enough petals to be one. Does anyone recognize this clematis?

Not only that, it's all wrong but very pretty!

http://www.clematis.hull.ac.uk...

Empress of India is close, do the tepals always curl back?

http://www.clematis.hull.ac.uk...

The Vagabond, the boss of stamens on yours look smaller, is that as much as they open?

http://www.clematis.hull.ac.uk...

Clematis viticella Etoile Violette .. which appears to be a 'group' and is variable.

http://www.hillieronline.co.uk...

http://www.paghat.com/clematis...

http://apps.rhs.org.uk/plantse...

http://www.growsonyou.com/phot...

http://www.pnacza.pl/wms/wmsg....

Clematis 'Aotearoa'? It's in the viticella group which yours appears to be..

http://www.esveld.nl/plant.php...

http://www.clematis.hull.ac.uk...

http://www.vanplant.co.nz/yaku...

http://www.esveld.nl/htmldiaen...

Oh my. I have no idea now! The closest looks like the Clematis 'Aotearoa'

Clematis 'Aotearoa' does seem to tick all the boxes!

Well, from now on that's what it'll be! Thanks, Janet!!