In article ,
Stewart Robert Hinsley wrote:

Apart from the lack of a saucer it seems to fit with Cobaea scandens.
The web is reluctant to disgorge images of species other than Cobaea
scandens and Penstemon cobaea, but Cobaea pringlei has a non-spreading
calyx. Your plant looks somewhat intermediate between Cobaea scandens
and Cobaea pringlei.

Thanks very much - I thought of the former, but there's no saucer
and the flower is the wrong shape. The latter rings a bell, so
that's probably what it is.


Regards,
Nick Maclaren.