Russia Flora: Plant, up to 8(10) cm tall. Stem prostrate, arcuately curved, less often erect, unbranched. Leaves numbering 2-5; blade 0.5-2(4) cm long and wide, rounded-reniform or rounded, with entire margins or slightly wavy along the edge, with a purple tinge on the lower side. Petiole up to 7 cm long. Flowers solitary, less often grouped in 2-3, up to 1.5(2) cm in diameter. Perianth segments up to 8(10) mm long, rounded-elliptical, bright yellow, often purple underneath. Stamens up to 5 mm long. Leaves numbering 6-10, up to 6 mm long, more or less abruptly transitioning into a curved style up to 1 mm long. 2n = 32 (Zhukova, Petrovsky, 1972), 52 and 56 (Zhukova, 1969), 60 (Zhukova, 1980), 72 (Zhukova, 1968).

Distribution: Chukotka, Anadyr, Anadyr-Penzhina, Koryak, Kolyma, Aldan, Kamchatka (western, eastern), Commander Islands (Fig. 1). - Found in tundra, along water bodies, in swamps, on hummocks and in hollow depressions, on mountain balds, near snow patches. Flowering period V-VIII. - General distribution: European part (Arctic), Western (northern) and Eastern Siberia; Scandinavia, North America. - Described from North America.