Six new Cladoniae for the Netherlands are mentioned and their main characteristics described. Cladonia cenotea (Ach). Schaer., C. stellaris (Opiz) Pouzar et Vezda, C. subcervicornis (Vain.) DuRietz and C. symphycarpia Fik. are recorded from a single find. The first two were already labelled correctly, but not yet published. C. gonecha (Ach.) Asah. and C. rei Schaer. have been recognized by chemical methods from several localities, humous sites then C. rei seems to prefer less acid and less C. subulata (L.) Wigg., which closely resembles it.