There are other fungi that can look similar when viewed from the upper side. Certainly a view of the upper side is always useful but in this case it happens that the underside carries much more information. In some of the fruitbodies you can see a bit of the smooth pinkish/purple underside - which, combined with the view of the upper side, leads to the species. Very nice photos of such a mass of fruitbodies, still in prime condition.