The type specimens of Pluteus dianae and P. punctatus from the Czech Republic were studied morphologically and molecularly. New collections identified by nrITS sequence analyses extend the distribution of P. dianae to Denmark, European Russia, and the Asian part of Turkey and of P. punctatus to Sweden. The application of these names is discussed; both belong in the P. plautus complex, and data on European and North American taxa in this complex are summarised and compared with P. dianae and P. punctatus. Pluteus aestivus is considered a nomen dubium.