United States, Minnesota, Carlton, Carlton Co.; On large outcrops; one mile east of Thomson; T48N R16W SE1/4 SW1/4 SW1/4 Sec. 4;;048N;16W;4
46.670503 -92.375108 +-800m. WGS84
On large outcrops od dry, upturned, interbedded, slate and graywacke of the Thomson formation; in dry, thin soil and in cracks of bedrock. Full sunlight to partial shade under Pinus strobus & Picea glauca. Associates include Viola adunca, Selaginella rup