Potentilla ID

Though I love seeing them, I'm afraid I haven't paid close enough attention to identify the various alpine potentilla species that occur in the eastern slope Rockies in south-central Alberta (Kananaskis Prov. Park, Banff N.P.). However, I wonder if someone might recognize this one on sight?

The plant is up to about 10 cm in height; the leaves are basal and trifoliate; the flowers are mostly solitary but can be branched with up to 2 (probably 3) flowers; petals are longer than sepals. Unfortunately, I did not turn over the leaves to judge the hairiness! Could it be Potentilla uniflora?

Thanks in advance for any insight.