HOW TO KNOW THE SEAWEEDS 



113a Conceptacles both on margins and on flattened faces of segments. 

 Fig. 149 Calliaitbron 



Fig. 149. Calliarthron cheilosporioides 

 Manza 



A few segments of a plant to show 

 the location of conceptacles both on 

 the margins and on the flattened faces 

 of the segments near the margins, X 

 4.3. This is one of several species 

 which occur at low tide level or below 

 along the California coast. 



Figure 149 



113b Conceptacles restricted to flattened faces of segments. Fig. 142, 

 148, 150 Bossea 



Fig. 150. Bossea sp. 



A small upper part of a plant show- 

 ing the position of the conceptacles 

 exclusively on the flattened faces of 

 the intergenicula, X 3.6. Although 

 no species of Bossea are known from 

 th^ Atlantic coast, a number of them 

 may be found along the Pacific, 

 sometimes several in a single local- 

 ity. They are usually at low levels 

 on surfy shores, and attached to solid 

 substrates. 



Figure 150 



115 



