Scandent shrub to 2m with quadrangular stems. Glabrescent leaves to 130mm x 45mm with dentate margins. Terminal or axillary spikes to 200mm long with 7-15 flowers, calyx to 13mm becoming 13.5 in fruit. Purple-blue corolla to 22mm with tube 15mm long, dorsal lobe to 110mm, inferior lobe to 6mm. Maroon nut to 2.1mm x 1.2mm.