' 'I' ;I t; ‘i I, i I fr’ !t i[ -I'i' P jk 4 a 1. Docidium Ehrenbergii 3. Docidium nodulosum. Ealfs. 2. Docidium clavatum. Kutz. Ealfs. 4. Docidium truncatum. Breh. .iirii ri [I .ri ■■^1 'rir■ I I: I JijS