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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