Name: Hygrocybe pratensis
Author: (Pers.) Bon
Preferred Synonyms:Cuphophyllus pratensis (Fr.) Bon
Deprecated Synonyms: Camarophyllus pratensis (Pers.) P. Kumm., Agaricus pratensis Fr., Gymnopus pratensis (Fr.) Gray, Agaricus claviformis Withering, Agaricus miniatus Sowerby, Hygrophorus pratensis (Fr.) Fr., Hygrocybe pratensis (Fr.) Murrill
The Index Fungorum considers Camarophyllus to be a synonym for Hygrocybe, so they list this species as H. pratensis. The type species for Camarophyllus is C. pratensis according to Singer. The type for Hygrocybe is H. conica, so apparently Bon has concluded that this isn’t a good distinction. Please update this if you have any more info on why this is not a good genus.