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