Coefficient of Conservatism:
Coefficient of Wetness:
Ranging from Labrador to western Yukon, as it comes south it seems concentrated near the shores of the Great Lakes, where it is often abundant in moist calcareous meadows and interdunal flats. Otherwise, especially inland, it is local in fens, on calcareous banks and sandstone cliffs, and in other cool moist places.
Wherever one finds butterwort (Pinguicula vulgaris) one is almost certain to find this Primula closely associated, although the latter is more widespread. Other characteristic associates include such calciphiles as Selaginella selaginoides, Carex crawei, C. garberi, Eleocharis quinqueflora, Rhynchospora capillacea, and Parnassia parviflora.