Perennial herb, almost glabrous; stock short; scapes ascending or decumbent, to 35 cm long. Leaves elliptic to oblanceolate, entire or dentate; lamina 5-15 cm long, 2-4 cm wide. Bracteoles free, to 4 cm long. Adaxial sepal narrowly elliptic to ovate, to 12 mm long. Corolla 10-12 mm long, pubescent outside, ±villous inside, without enations, yellow; wings narrow, ±to base of adaxial lobes. Ovary septum c. 1/2 as long as locule; ovules 14-16; indusium transversely oblong, 2 mm wide. Capsule ovoid. Seeds broadly elliptic, 1.5 mm wide, punctate.