338 THE PLANT PHYLA 



Phylum VI. RHODOPHYCEAE. The Red Algae 

 Red to purple filamentous to massive plants; marine 



Class 13. BANGIOIDEAE. Antherids and oogones developed 

 from ordinary cells of plant body; 

 propagation by monospores. Red or 

 purple plants. (Sp. about 50, doubt- 

 fully belonging here.) 

 Order BANGIALES. One chloroplast in each cell. 



Family 1. Bangiaceae. Including the genus Por- 



phyra. 



Order RHODOCHAETALES. Several to many chloroplasts 

 in each cell. 



Family 2. Rhodochaetaceae; 3, Campsopogonaceae. 

 Class 14. FLORIDEAE. Red Seaweeds. Antherids and 

 oogones specially developed; propaga- 

 tion by tetraspores. Red or purple 

 plants. (Sp. about 3,000.) 



Order NEMALIONALES. Lower Red Seaweeds. Mostly 

 filamentous plants. Sporophores pro- 

 duced directly from fertilized eggs. 



Family 4. Lemaneaceae. 



Family 5. Helminthocladiaceae. Filamentous or 

 parenchymatous, variously branched. 

 Batrachospermum, Nemalion. 



Family 6. Thoreaceae; 7, Chaetangiaceae; 8, Geli- 



diaceae. 



Order CBYPTONEMIALES. Hard Red Seaweeds. Filiform, 

 branched, often complanate; sporo- 

 phores produced by remote auxiliary 

 cells. 



Family 9. Gloiosiphoniaceae; 10, Grateloupiaceae; 

 11, Dumontiaceae; 12, Nemasto- 

 maceae; 13, Rhiziphyllidaceae; 14, 

 Squamariaceae. 



Family 15. Corallinaceae. Filamentous, branched 

 (and jointed) to crustaceous. Coral- 

 lina. 



Order CERAMIALES. "Sea Mosses." Filiform to folia- 

 ceous plants. Sporophores produced 

 by nearby auxiliary cells. 



