REPRODUCTION 



253 



X 



7v^ 



Ect. mrestcens 



X 

 NemodiLrrr..dL, Htctyota. 



X 



R^D 



*^^ 



/ 

 P 





X. 



X 



PyUicLU, 



_x_ ^ 



00 o 



R ^^2x ,) 



..r^p 



^ 



Oi-ctijosihihon. 



2x 

 Punc£a.YL3L, 



^ 



2 C? 



i? 



^D 2 



PHAEOPHYCEAE 



Nothe.ia, 



~CdeVch3ete "^H/.OROPHYCe/»e 



UtotkriK sp 



R ^D 2x i 

 /{a. ti cyst LS 





Codium 



X 



RHOOOPHYCEAE 



RD 



7\ i 



00 



5cinaia 



\? 



JLU.§ora. 



AtivIeLdtU 



.Tifi 



D 



Phylloh^ors. 

 OroduieL 



oni^. 





Fig. 166. The principal types of life cycle in the Phaeophyceae, Chlorophyceae 

 and Rhodophyceae and their possible inter-relationships. 



