Apocynaceae . . . . . Periwinkle
Vinca . . . . . Periwinkle
Vinca major . . . . . Periwinkle
Margins of leaves and calyx lobes minutely hairy; larger with flower 30-50 mm across
Vinca minor . . . . . Lesser Periwinkle
Margins of leaves and calyx lobes hairless; also generally smaller with flower 25-30 mm
