The genus is primarily native to the mountain chains of
Asia and
North America. In the
Old World, it is distributed northwest to
Kazakhstan,
Mongolia, and eastern
Russia. It is found in most of the northern
United States, with some species located in
Guatemala.
Claytonia perfoliata, the species for which the term '''miner's lettuce''' was coined, is distributed throughout the Mountain West of North America in moist soils and prefers areas that have been recently disturbed. ==Uses==