Which appears on more continents, Utricularia species or Witch-hazel species?
Utricularia: Utricularia, commonly and collectively called the bladderworts, is a genus of carnivorous plants consisting of approximately 233 species (precise counts differ based on classification opinions; one recent publication lists 215 species). Utricularia:  They occur in fresh water and wet soil as terrestrial or aquatic species across every continent except Antarctica. Witch-hazel: Witch-hazels ("Hamamelis," ) are a genus of flowering plants in the family Hamamelidaceae, with four species in North America ("H. mexicana", "H. ovalis", "H. virginiana", and "H. vernalis"), and one each in Japan ("H. japonica") and China ("H. mollis").
i don't know