Rhodophyceae 



I? 



Bangia 

 Prasiola 



Parenchymatous 

 type Ulva, 

 Enteromorpha 



Aerial only 

 Draparnaldia 



Base only 

 Protoderma 



Branched h'eterotrichous 

 type 

 e.g. Stigeodoniiim 



Phaeophyceae 



Conjugales 



Spherical 

 colonies 



Volvox 



net 



Hydrodictyon 



t 



t 



Colony 

 Pediastrum 



Pleodorina 

 A 



net 

 (Schizodictyon) 



Eudorina 



\ 



gelatinous 



colonies 



Tetraspora type 



Pandorina -<- 



t 



Simple filament 

 (Ulothrix type) 



A 



attached unicell 



(Characium type) 



A 



non-motile free-living 



unicell 



(Chlorella type) 



A 



primitive 

 Ilir Chlamydomonad 

 type (motile) 



Siphonaceous 

 type (Protosiphon) 



Dendroid colonies 

 e.g. Prasinocladus 



Scheme A 

 The names of the genera do not necessarily imply that they 

 formed the actual intermediate stages, but merely that forms Uke 

 them were possibly involved . 



309 



