Japan Flora: Flowers 3-10(-17) on the scape, the pedicels slightly de­clined; calyx 4-5 mm. long, the tube half as long as the lobes; corolla 10-13 mm. across; capsules nearly as long as the calyx. Reported from Kanayama, at the foot of Mount Yubari in Hokkaido. This may be only a variant of P. yuparensis.