I have confirmed correct identifications of B.stracheyi and B.purpuracsens - now it gets more complicated!
Stewart listed Bergenia himalaica (syn. B.ciliata var. ligulata, B.ligulata) as common & gregarious on shady cliffs @ 1800-3000m in Kashmir.
He mentioned B.ciliata var. ciliata as only recorded from Hazara and Kagan Valley. There has clearly been confusion between these similar taxa.
Ghazanfar in Saxifragaceae (Flora of Pakistan, 1977) recognised only 2 species in Pakistan: B.stracheyi and B.ciliata, splitting the latter into forma ciliata
and forma ligulata on the basis of the hirsute leaves of the former (though sometimes glabrous upper surface).. She considered forma ciliata as very common on rocks in and around the Murree area.
Nowadays, B.ciliata forma ligulata (or B.himalaica as Stewart knew it) is Bergenia pacumbis. I think the plant photographed in Uttarakhand is probably this rather than what is now the separate B.ciliata - though I think there has been confusion between some forms of both.
The plant used medicinally is mainly or perhaps exclusively Bergenia pacumbis included specimens cultivated in the 'Medicinal Plants Section of the Nehru Botanical Garden, Srinagar, Kashmir - images of which I may post.