HOW TO KNOW THE FRESH-WATER ALGAE 



Gloeotrichia 

 p. 166, fig. 287 



Rivularia 



p. 167, fig. 288 



Sacconema 

 p. 166, fig. 286 



B. SUB-DIVISION CHLOROBAC- 

 TERIACEAE 



VII. PHYLUM RHODOPHYTA 



A. SUB-DIVISION PROTOFLORI- 

 DEAE 



Family Goniotrichaceae 

 Asterocystis 

 p. 129, fig. 207 

 Family Bangiaceae 

 Bangia 



p. 127, fig. 205 

 Family Erythrotrichaceae 

 Compsopogon 

 p. 126, fig. 203 

 Uncertain Position 

 Porphyridium 

 p. 130, fig. 209 



B. SUB-DIVISION FLORIDEAE 

 Family Chantransiaceae 

 Audouinella 



p. 127, fig. 204 

 Batiachospermum 

 p. 110, fig. 173 

 Family Lemaneaceae 

 Lemanea 



p. 124, fig. 200 

 Tuomeya 

 p. 126, fig. 202 

 Family Thoreaceae 

 Thorea 



p. 125, fig. 201 



198 



