Can anyone identify this plant?
The plant is a herbaceous perennial climber which grows every year from a tuber.
It doesn t twine, have tendrils, or any other obvious climbing adaptation.
The leaves are finely cut (pinnate or bi-pinnate), and bourne on long petioles. Rather uniquely, the petioles are angled downwards on the stem (most plants have them angled up).
The flowers are orange, tubular but asymmetrical (top and bottom lips different), about 2.5cm long and 1cm or so wide at the opening. Bourne in clusters of 3-5.
The stem in the picture has just two leaves. They are bipinnate, and the leaflets are lobed. I was wrong about climbing adaptations - they have tendrils at the tips of each leaf (a somewhat unusual place for them). Also, the stems are square, which should narrow things down.