&ablc 0f Entente. 



Page 



Introduction 5 



Synopsis or Systematic List of British Seaweeds . .9 



Ojc JHrst4ttie ^ooL 

 Ulva — Enteromorpha — Myrionema — Conferva — 

 Cladophora — Eucus — Elachistea — Ectocarpus — 

 Polysiphonia 26 — 44 



Z\)t ^alfcttoc Pool. 

 Ceraminm — Mesogloia — Dumontia — Gelidinm — Po- 

 lysiphonia — Ry tiphlcea — Chylocladia — Ptilota — 

 Griffithsia — Wrangelia — Laurencia — Hypnea — 

 Corallines — Catanella — Halidrys — Chondrus — 

 Cladostephus — Chordaria — Padina . . .46 — 74 



£ofo;2Hater IHatfc. 

 Polysiphonia — Callithamnion — Ddesseria — Nito- 

 phyllum — Plocamium — Bonnemaisonia — Eurcel- 

 laria — Polyides — Grateloupia — Iridea — Himan- 

 thalia — Chorda — Myriotrichia — Odonthalia — 

 Naccaria — Gloiosiphonia — Spyridia — Nemaleon — 

 Porphyra — Gigartina 77 — 104 



Wyt £ofocst4ita $ool. 

 Ceramium — Codium — Dictyosiphon — Gracillaria — 



Cystoseira — Sphacellaria .... 106 — 110 



