Dear Garg ji
It has to be Hook. and not Raf.
Hooker's publication is dated 1824, where as
Rafin's 1840.
If Rafin's plant is same as Hooker's, it
is of no consequence, better to forget it.
Alternately if his plant is different, the
name can't be used being a later homonym
Potentilla nepalensis Hook., is
alright
ENJOY HAPPY DIWALI