A species found mostly in Norway but also into Sweden and red listed in both countries. It is threatened by land use and climate change. Distinguished from P. farinosa by having fewer flowers in an umbel, an almost ribless calyx which is obovoid-ellipsoid, calyx lobes dark and farinose inside, shorter corolla lobe and longer corolla tube. It is monomorphic with the stigma reaching to the base of the anthers.