Spiny Puffball

With nothing better to do one wet and windy afternoon, the Diary set about searching the internet for an identification for this fungus.  We had found it recently, in a very exposed location on the southwestern coast of Ardnamurchan, high up on a ridge above the sea.  As so often seems to happen, there was....

....a small group of them, then we found no more.

The search terms 'spiny puffball' finally produced a picture which resembled these, of a puffball called Lycoperdon umbrinum.  Can anyone confirm this identification or, if it's wrong, give the correct one?