Erect herb to 60 cm high – glabrous – with adventitous roots. Leaves mostly basal from a stock – linear to oblanceolate – 5–25 cm long – 1–12 mm wide – usually glossy – margins entire or denticulate – thick; sessile. Flowers in thyrses or spikes on almost leafless scapes; stalks almost obsolete except sometimes the lowest ones – bracteolate. Sepals linear – 04)–5 mm long. Corolla 13–15 mm long – yellow – with whitish cottony and yellow stellate hairs outside – almost glabrous inside – with enations – indistinctly auriculate; wings 1.5–2.5 mm wide. Indusium transverse-oblong. Fruit obovoid – 5–9 mm long; valves 2 – bifid; see ds elliptic – c. 1.5 mm long – brown – reticulate-pitted