1	"Some leaves with distinct, 6-200 mm long petioles; corolla lobes with fringed margins"	"Wellstedia laciniata"
1	"Leaves narrowing into petiole-like bases but without distinct petioles; corolla lobes entire"	2
2	"Flowers solitary in the leaf axils; corolla tubes pubescent outside"	"Wellstedia somalensis"
2	"Flowers in dense axillary cymes; corolla tubes glabrous outside"	3
3	"Plants dwarf shrubs, up to 40 cm tall; stems 4-10 mm thick; corollas 3-4 mm long"	"Wellstedia robusta"
3	"Plants more or les flat on the ground when moist, coiling up when dry; stems more slender; corollas 2-3 mm long"	"Wellstedia socotrana"