Perennial hairy herb with creeping or sometimes climbing stems, leaves to 60mm x 30mm, glabrous above or with hairy margins, villous beneath. Extra-axillary many-flowered inflorescence of brown-purple flowers, hairy calyx lobes to 6mm x 4mm, corolla tube short, lobes to 7mm x 4.5mm, hairy above, glabrous beneath, broad villous follicles to 100mm long