I 



12 Charles E. Bcsscy 



Class 7. VAUCHERIOIDEAE. Plants filamentous, septate or 

 tubular. 



Order Cladophorales. Filaments septate, the segments 

 coenocytic. 



Family i. Cladophoraceae. Filaments simple or branched, 

 basally attached ; isogamic. Rhizocloniuui, Cladophora, Pitho- 

 phora. (Pf. I, 2, 114.) 



P'amily 2. Sphaeropleaceae. Filaments simple, unattached, he- 

 terogamic. SpJiacroplca. (Pf. I, 2, 121.) 



Order Siphonales. Filaments tubular, irregularly branched; 

 chlorophyllose holophytes. 



Family 3. Phyllosiphonaceae. Endophytic and parasitic in the 

 tissues of higher plants. PJiyllosiplion. (Pf. I, 2, 125.) 



Family 4. Codiaceae. Filaments compacted into a large plant 

 body; isogamic; marine. Codiimi, Penicillus, Udotea, Halimeda. 



(Pf.I,2, 138.) 



Family 5. Vaucheriaceae. Filaments single, free; heterogamic; 

 in fresh or brackish waters, or on wet earth. Vancheria. (Pf. I, 



2, 131-) 



Order Siphonomyceteae. Filaments tubular, irregularly 

 branched ; chlorophyll-less hysterophytes. 



Family 6. Saprolegniaceae. Aquatic, well-developed, free, par- 

 asitic or saprophytic filaments, attached by endogenous rhizoids. 

 Saprolcgnia, Achlya. (Pf. I, i, 93.) 



Family 7. Cladochytriaceae. Aquatic, endogenous, branched 

 parasitic filaments, with no rhizoids. Cladochytrium. (Pf. I, i, 

 80.) 



Family 8. Ancylistaceae. Aquatic, endogenous, simple, few 

 celled parasitic filaments with no rhizoids. Lagcnidinm, Rhko- 

 myxa. (Pf. I, i, 89.) 



Family 9. Peronosporaceae. Parasites in the tissues of higher 

 plants, usually not aquatic. Albugo, Phytophthora, Peronospora, 

 (Pf. I, I, 108.) 



Family 10. Mucoraceae. Mostly saprophytic on various sub- 

 stances, or parasitic on other fungi. Aliicor, Hydro gcra, Pipto- 

 ccplialis. (Pf. I, I, 119.) 



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