Glabrous spindly subshrub, erect or climbing stems. Leaves to 97mm x 31mm with winged petiole. Axillary dichasia or few-flowered corymbs of flowers to 28mm long with bracteoles to 10mm long, calyx to 13.5mm long with ridged lobes 12mm x 2mm, calyx tube 2mm long, bright yellow corolla to 45mm long with tube 25mm long, corolla lobes 20mm x 4mm. Beaked capsule 15mm x 4mm with 1mm beak & persistent calyx.