A perennial herb associated with a variety of wetland habitats including ponds, rivers, canals, marshes, fens, fen-meadows, wet woodland and dune-slacks. It also grows on coastal boulder beaches in Scotland. Generally lowland, but reaching 365 m at High Cup Gill (Westmorland).
S. galericulata was mapped as `all records` in the 1962 Atlas. It has declined in England as a result of drainage and habitat destruction (Mountford, 1994). Elsewhere there is no evidence for a change in distribution.
Eurosiberian Boreo-temperate element; also in N. America.