Richards : Ceramothamnion codii 263 



other closely following, and perhaps even a third and fourth mass 

 of spores is formed, reminding one of the polyspores found in cer- 

 tain species of Ptilota. In the older stages it is impossible to tell 

 where the spores are attached, they are often so displaced as to 

 appear to have to do with the next node below the one from which 

 they really arose, although in following their development no case 

 — with the possible exception of the one shown in Fig. 17 — was 

 observed where any other than the first node above the whorl of 

 'secondary branches produced any outgrowth. Signs of a slight 

 activity in the nodes above were occasionally noted, but this never 

 led to the formation of polyspores. 



The masses of polyspores, apparently mature, vary in size 

 from about 50-80// by 35-60/^, they are never spherical, and 

 vary also in the number of spores contained, which was from twelve 

 to twenty, in specimens counted. The spores themselves are also 

 irregular in shape and size being, irregularly polyhedral from com- 

 pression, and measuring from 15 to 20 /i in their greatest diameter. 



In connection with the development of these apparently 

 wholly non-sexual spores, it is necessary to refer again to the 

 hair-like processes found springing from the cells in some in- 

 stances. As has been previously noted, some of the mate- 

 rial collected showed the hairs while other material was de- 

 void of them. When first observed on a polysporic specimen it 

 was hoped that they were, indeed, trichogynes, but subsequent 

 investigation showed that these hairs also occurred on anther- 

 idial and even tetrasporic specimens (Figs. 9 and 23), and that 

 their lack of contents except at the very tip placed them un- 

 doubtedly in the category of the hair-like processes common with 

 other algae. Nor was anything in the nature of trichophoric ap- 

 paratus found in connection with them. Even where they were 

 present on the same node with the young polyspores (Fig. 16) 

 there was no connection apparent. In short, they lacked the 

 easily recognized appearance of trichogynes and trichophoric cells, 

 which is familiar to any one who has studied Florideae. 



To sum up, it may be said that this alga, epiphytic on Codiam 

 tomentosum, is in habit similar to Rhodochorton, and in the general 

 appearance of the cell and its chromatophore like other forms of 

 the genus CallitJiamnion ; that it has, as to the filament as a 



