Sphagnum molle Sull., a new species for Switzerland. Bull. Soc. vaud. Sc. nat. 82.4: 313-318. In the course of an evaluation of the Sphagna collected in connection with the survey of the bogs of national importance in Switzerland a Sphagnum species rare for central Europe, Sphagnum molle Sull., was found. The determination of all the respective herbaria in Switzerland confirmed that this species had never been found before in Switzerland. In order to establish the distribution and the ecological conditions of this species in the Swiss mires, field studies will be necessary.