It is listed as a threatened species in Minnesota, not so much because the species is currently threatened, but because there is only one population found on an east-facing bluff composed of sandstone that is capped with limestone. In other parts of its range it is found in woods, on talus-slopes, in rocky areas and walls, on wooded slopes and ravines, and at the edges of woods, streams and roads.
It is classified as a threatened species in Minnesota, not due to immediate danger of extinction but because it has only one population residing on an east-facing bluff made of sandstone capped with limestone. In other parts of its range, it can be found in forests, talus slopes, rocky areas and walls, wooded slopes and ravines, and at the edges of woods, streams, and roads.