Meikle, R.D. 1985: Flora of Cyprus 2
but supplemented
1Calyx glabrous or with a few sessile glands
1'Calyx distinctly glandular-pilose
2Calyx-lobes obtuse or subacute, not tapering; corolla very small, incl. spur less than 10 mm long
2'Calyx-lobes tapering, acuminate; corolla incl. spur 10-16 mm long
3Corolla violet-purple; inflorescence short, compact
3'Corolla creamy white; inflorescence lax, elongate
4Corolla incl. spur 15-25 mm long
4'Corolla incl. spur shorter than 10 mm
5Corolla yellow, exceeding the calyx; spur 2.5-3.5 mm long
5'Corolla blue or bluish, scarcely exceeding the calyx; spur less than 0.5 mm long