Leaves two to three, up to 13cm long by 3mm wide, two-keeled, erect, glaucous. Stem round, striate, up to 18cm tall. Pedicels 10mm long. Flowers 1-5, ascending, rich almost orange-yellow, up to 2.2cm in diameter, tube 1.5cm long, tepals patent, just imbricate, corona cup-shaped, 6mm high, 9mm diameter, slightly crenate or almost entire. Anthers three in tube, three in corona, the style included in corona, early spring. Peaty pockets among limestone rocks, from almost sea level to around 600m. in Serra de Arrabida and Serra de Candeeiros, central Portugal.