A very special form of this species from the South of France with relatively large lush foliage (up to about 3ins long), a more vigorous climbing habit and very refined, richly coloured flowers.
Dominik Frank tells me "this particular form is very hardy, together with an associate from France we established it in cultivation a few years ago. Isolated properly mature specimens can take as much as -12 °C. Actually it isn't native to France, the few feral populations scattered across the Côte d’Azur seem to originate from Algeria."
Very nice indeed.