| 1 | Flowers sessile or short-pedunculate in axils of upper leaves |
| 1' | Flowers pedunculate, terminally and/or in axils, on conspicuously long peduncles |
| 2 | Leaves sessile to subsessile, blade linear to narrowly lanceolate, to 1.2 cm wide; corolla 45- 50 mm long |
| 2' | Leaves petiolate, blades elliptic to oblong to narrowly obovate, ovate, ovate-elliptic to ovate-oblong to deltoid, 1.2-4.5 cm wide; corollas 18-30 mm long |
| 3 | Corollas blue or blue-violet, pale purple to violate |
| 3' | Corollas brick-red, pale yellow, sulphur-yellow or white with copper-red apex |
| 4 | Corolla pale yellow, sulphur-yellow or white with a copper-red apex, 25-32(-38) mm long; distal foliose bracts inconspicuous, 10-20 x 1-2 mm; calyx lobes subulate, 5-6 mm long, puberulous, minutely and densely gland-dotted |
| 4' | Corolla brick red, 34-50 mm long; distal foliose bracts conspicuous, bicolored, 22-40 x 8-18 mm; calyx lobes narrowly triangular, 3 mm long, glabrous, distinctly gland-dotted |
| 5 | Much branched, prostrate to procumbent herb; corolla pale purple to violet, 25-30 mm long, tube infundibuliform, 7 mm long, basal portion cylindric, 5 mm long, shorter in length than infundibular upper portion, apically 15 mm wide |
| 5' | Erect herb; corolla blue or blue-violet, 18-25 mm long, tube infundibuliform, 14-18 mm long, basal part cylindric, 3-4 mm long, similar in length to infundibular upper part, apically 3.5-4 mm wide |
