Hosta 'Mediovariegata' (undulata). Click image to learn more, add to your lists & get care reminders. Other names: Wavy plantain lily, Hosta 'Mediovariegata' (undulata) Genus: Hosta Species: H. undulata var. undulata - H. undulata var. undulata forms ovate, twisted, rich green leaves marked creamy-white in the center, and funnel-shaped light purple flowers on stems.