| 1 | Corolla-limb violet-blue or claret-red; flowers resupinate, with a long slender corolla-tube; stamens included; inflorescence spiciform; basal leaves oblong, 6-15 x 1.5-3.5 cm, forming a loose rosette |
| 1' | Corolla-limb yellow (sometimes pink when dried); flowers not resupinate, with a narrowly infundibuliform corolla-tube; stamens exserted; inflorescence elongate; basal leaves narrowly oblong, oblanceolate, narrowly spathulate or linear, generally less than 7 cm long and 1 cm wide |
| 2 | Cauline leaves and bracts almost linear, entire or very obscurely 3-lobed at apex; nutlets foveolate dorsally with rounded pits |
| 2' | Cauline leaves and bracts cuneate, usually 3-lobed apically; nutlets transversely rugose dorsally or with oblong reticulation |
| 3 | Cauline leaves and bracts distinctly 3-lobed; corolla up to 20 mm long, 9 mm wide; nutlets closely transverse-rugose |
| 3' | Cauline leaves and bracts very shortly and obtusely 3-lobed or subentire; corolla 8-11 mm long, less than 5 mm wide; nutlets rather openly transverse-rugose |
