Key for Besleria L.

1Corolla 3.5-4.0 cm long, oblique in calyx, spurred, pilosulous; peduncle 5-7 cm long; calyx lobes lanceolate, free; ovary pilosulous
1'Corolla to 2.2 cm long, erect in calyx, not spurred, glabrous to minutely pubescent; peduncle, if present, only up to 4.5 cm long; calyx lobes lanceolate to suborbicular, free or connate to 2/3 of length; ovary glabrous
2Peduncle lacking or much less than 1 cm long
2'Peduncle present, at least 1 cm long
3Leaf margin minutely denticulate to entire; calyx lobes 0.1-0.3 cm long; corolla 0.4-0.7 cm long
3'Leaf margin serrate, dentate, or sharp serrate towards apex; calyx lobes 0.3-0.8 cm long; corolla 1.2-2 cm long
4Stem apices strigose; calyx lobes connate 2/3 of length; corolla only slightly longer than calyx, tube not ventricose; disk annular
4'Stem apices hirsute; calyx lobes free; corolla 2-3 x length of calyx lobes, tube slightly ventricose; disk semi-annular
5Flowers numerous; calyx lobes suborbicular, 0.2-0.3 cm long; corolla small, 0.35-0.5 cm long, white, ventricose
5'Flowers 1-8; calyx lobes usually lanceolate, rarely ovate, 0.5-1.5 cm long; corolla 1.3-2.5 cm cm long, variously yellow, orange, or red, but not white, ventricose or not
6Calyx lobes free or rarely connate to 1/4 of their length
6'Calyx lobes united for 0.5-0.6 cm