Interesting, Index Fungorum gives Conocybe filaris and Conocybe rugosa as current names for two distinct species with the Pholiotina names as synonyms. I haven't seen the European literature on these.
I first saw that and then that Mycobank gives the two Pholiotina names as current with the Conocybes as synonyms (like Funga nordica's view). Some other sources used just rugosa for both. It was almost a coin toss as to whose view to follow.