Large, white flowers suffused pale blue along broad margins and overlaid with a very pale, grey-green tinged purple bar. Filaments pale greenish white; connectives red-purple. Named after Ken Black (British Clematis Society Membership Secretary) and his wife Helen.

Group:	Early large-flowered group
Approximate height:	1.5 - 2.0 metres
Flowering period(s):	May Jun Aug Sep
Pruning:	Light prune (Group 2)
Raised by:	H Caddick
Country of origin:	United Kingdom
Date raised:	r2015 n2016
Parentage:	Chance seedling
Other name(s):	None known
Further detail:  Flower diameter: 17cm Tepals: 7-8; 9cm long × 5 cm wide, broadly elliptic, overlapping half to two-thirds, with wavy to ruffled margins, long-pointed with apiculate to cuspidate tips Database entry: 4139