question: Are Leontopodium and Sandersonia both native to Europe?
answer: no
context: Title: Leontopodium
  Passage: Leontopodium is a genus of plants in the Asteraceae family (which also includes daisies and sunflowers).  The genus is native to Europe and Asia.  The fuzzy and somewhat stocky "petals" (technically, bracts) could be thought of as somewhat resembling lions' paws —hence the genus name combining "léōn" (lion) and "pódion" (foot).
  Title: Sandersonia
  Passage: Sandersonia is a rhizomatous plant genus native to South Africa (the Cape Provinces, KwaZulu-Natal and the Northern Provinces) and Swaziland, part of the family "Colchicaceae".  It has only one species, Sandersonia aurantiaca.  It is also called Christmas bells, golden lily of the valley or Chinese lantern lily or Chinese lantern bulb "S. aurantiaca" is a perennial plant and a climber that can reach 30 inches in height.  The flowers are yellow or orange.
  Title: Leontopodium himalayanum
  Passage: Leontopodium himalayanum is a species of plant in the family Asteraceae.  It is native to China, Bhutan, India, Myanmar, Nepal and Pakistan.
citations: Leontopodium Sandersonia