1997 Volume 72 Issue 1 Pages 62-65
Cypripedium guttatum Sw. in Acta Acad. Holm. 251 (1800); Komarov, Fl. Mansh. 1: 508 (1901); Schltr. in Fedde Repert. Beih. 4: 81 (1919); Nevski in Fl. USSR 4: 596 (1935); Luer, Nat. Orch. U. S. & Canada 66 (1975).
Compared with Cypripedium yatabeanum, two leaves somewhat distantly disposed at the stem, 17-20 mm apart; the lip shorter, 14-21-(-25) mm long; stalk of lip shorter, 4-5 mm long; petals not expanded at apex; flower color white with dark purplish pink spots.
Hab. Akita Pref., Oga Peninsula (R. Mochizuki 1735, SHIN 179986). Newly found in Japan.
Distr. Europe, W. & E. Siberia, Sachalin, N. E. China, N. Korea, Alaska, Canada.