Erect plant containing tuberous roots. Stem 30 to 80 cm tall leafy. The upper leaves only slightly smaller than the lower ones. Inflorescence racemes up to 30 cm long. Sepals blue or white with blue veins, rarely pale purple, crisp pubescent to glabrous, lateral ones sub orbicular to nearly square, not contiguous with helmet. Claw of petals 5 to 7 mm. Filaments often almost glabrous, winged.