It may also be Potentilla tucumanensis or Potentilla norvegica.

Here a first result:
Potentilla brauneana: 2n=14.
Potentilla cinerea: 2n=14, 28.
Potentilla frigida: 2n=28.
Potentilla gelida: 2n=28, 42, 48, 64.

Potentilla acaulis 28.
Potentilla fragarioides 14.
Potentilla freyniana 14.

Potentilla norvegica 2n=70, 56.
Potentilla tucumanensis 2n=14.

Potentilla brauneana Hoppe:
2n = 14 Mattick 1950
Potentilla dickinsii Franch. & Savat.:
2n = 14 Kawano 1963
Potentilla fragarioides L.:
2n = 14 Shimotomai 1929
2n = 56 C.P. Malik 1965
Potentilla freyniana Bornm.:
2n = 14 Shimotomai 1930
Potentilla frigida Vill:
2n = 28 Popov 1939, Favarger 1965
Potentilla gelida C.A.Mey.:
2n = 42 Shimotai 1930, Popov 1939, Gustafsson 1947
Potentilla norvegica L.:
2n = 42, 2n = 56, 2n = 70 Popov 1939
2n = 70 Christoff, Papasova 1943
2n = 70 Löve, A. 1954
2n = 70 Löve, A. & Löve, D. 1956
2n = 70 Mulligan 1959
Potentilla megalantha Takeda:
2n = 70 Shimotomai 1929

Or Potentilla anglica 2n=56.

Probably Duchesnea cames from an unreduced eg of Fragaria nilgerrensis and a octaploid Potentilla.