Sansevieria Masoniana is now known as Dracaena Masoniana. Commonly called Mason’s Congo or Whale Fin Sansevieria. Native to the Democratic Republic of the Congo. Hence the name Mason’s Congo. Masoniana is nicknamed Whale Fin Snake Plant because of the unique shape of its unusually wide, paddle-like leaves. Though slow-growing, the Whale Fin Sansevieria reaches impressive size compared to other members of the genus.