Leaves two, glaucous, erect, to 20cm or more long, by 1-1.4cm wide. Stem 8-25cm tall. Pedicel 3-20mm long. Flowers solitary, horizontal or drooping, tube green 9-15mm long, tepals pale to deep yellow, 1.6-2.2cm long, sometimes twisted, corona deep yellow, 1.6-2.5cm high, not constricted at waist, lobed or dentate. Anthers uniseriate, overtopped by style, spring. Mountain grassland and open scrub in northern Spain and Pyrenees (but little known as a wild plant).