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Class 2. PH^EOPHYCE^E, p. 44. 



Order I. SYNGENETICLE . ... 44 



Family 1. Hydruraceae ... 45 



Hydrurus 



Family -2. Chrysomonadinacese .... 46 



Synura, Syncrypta, Uroglena 



Family 3. Dinobryacese 47 



Dinobryon 



Family 4. Phseocapsacese 48 



Phseococcus, Pbseospheera, Stichogloea 



Class 3. CHLOROPHYCE^E, p. 50. 



Order I. CEDOGONIALES 57 



Family 1. (Edogoniacese .... 57 



(Edogoniurn, Bulbochsete 



Order II. CH^TOPHORALES 66 



Family 1. Coleochsetacese . 67 



Coleochsete 



Family 2. Herposteiraceae ... . 70 



Herposteiron 



Family 3. Ulotrichaceas . 73 



Ulothrix, Hormospora, Gloeotila, Geminella, Radio- 

 tilum, Stichococcus, Uronema, Binuclearia 



Family 4. Cylindrocapsacese . . 81 



Cyliudrocapsa 



Family 5. Chsetophoraceae . . 83 



Cha'tophora, Myxonema, Draparnaldia, Pseudochsete, 

 Thanuiiochsete 



Family 6. Microthamniacese 



Microthamnion, Gongrosira, Leptosira 



Family 7. Trentepoliliacese . . 93 



Trentepohlia 



Order III. ULVALES . 95 



Family 1. Ulvaceae 95 



Moiiostroma, Eiiteromorpha 



Order IV. SCHIZOGONIALES .... 98 



Family 1. Prasiolaceae ... 98 



Prasiola 



