1	"Upper leaves deeply 3--many-lobed, lobes +- linear"	"Convolvulus althaeoides"
1	"Upper leaves entire to hastate, lobes wider than linear"	2
2	"Leaf hastate, petioled; corolla white, +- pink abaxially, especially at folds"	"Convolvulus arvensis"
2	"Leaf obovate to oblanceolate, +- sessile, narrowed to base; corolla pale-pink or -blue or white with yellow base, blue tips"	3
3	"Corolla +- 0.6 cm, pale-pink or -blue"	"Convolvulus simulans"
3	"Corolla 1.4--4 cm, center yellow, perimeter blue-purple, white between"	"Convolvulus tricolor"