NATURAL SYSTEM. 303 



: Erineum, 7- Mucor, 2. Aspergillus, 1. Peni- 

 cillium, 1, Botrytis, 2. Sepedonium, 1. Fusidium, 1. 

 Racodium, 1. Cladosporium, 1. Torula, 1. Acrosporium, 

 1. Byssus, 1. Himantia, 1. 



Fucacece Fucus, 5. Desmarestia, 1. Furcellaria, 1. 

 LaminariecB Himanthalea, 1. Laminaria, 5. Florida Du- 

 montia, 1. Halymenia, 8. Delesseria, 3. Odonthalia, 1. 

 Chondrus, 2. Lichina, 2. Gelidium, 1. Plocamium, 2. 

 Lomentaria, 2. Laurencia, 1. Gigartina, 3. Polyides, 1. 

 DictyotecB Zonaria, 1. Asperococcus, 1. Ulvacea Dictyo- 

 siphon, 1. Chorda, 1. Dumontia, 1. Ulva, 8. Punctaria, 



1. Chetophoroidea Nostoc, 1. Linckia, 2. Chsetophora, 3. 

 Coccochloris, 5. Ceramiece - Cladosephus, 1. Rhodomela, 2. 

 Polysiphonia, 8. Ceramium, 4. Asperocaulon, 1. Griffith, 

 sia, 1. Callithamnion, 4. Ectocarpus, 1. Amphiconium, 2. 

 Trentepohlia, 2. VaucheriecB Vaucheria, 4. Zygnemece 

 Zygnema, 4. Confervece Lemanea, 1. Batrachospermum, 



2. Draparnaldia, 1. Conferva, 13. Bangiece Bangia, 3. 

 Schizonema, 1. Lyngbyece Lyngbya, 1. BacillariecB Echi- 

 nella, 5. Gomphonema, 3. Oscillarice Oscillatoria, 4. 



