Are Leontopodium and Sandersonia both native to Europe?
Sandersonia 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.
Chrysosplenium iowense Chrysosplenium iowense is a species of flowering plant in the saxifrage family known by the common name Iowa golden-saxifrage. It is native to North America, where it is "primarily a Canadian species", occurring from the northern Northwest Territories south to British Columbia and east to Manitoba. There are also disjunct, relictual occurrences within the United States, in the Driftless Area of Minnesota and Iowa.