(156) 



of the ramiili, which usually feather to a greater or less extent the 

 extremities of the branches. In this state it may be readily mistaken 

 for C.Jloridulum, but the habit is somewhat different, as well as the 

 length of the joints and the ramification of the main branches. 



From the last species, C. Turneri, it may also be known by its much 

 shorter articulations ; but the principal marks of distinction lie in the 

 fruit, which will readily distinguish it at a glance. 



2 



CALLITHAMNION BAEBATUM 



EXPLANATION OP DISSECTIONS. 



Fig. 1. — Portion of a plant. 

 2. — Branch from same. 

 3. — Portion of plant with tetraspores. All magnified. 



