LIST OF PLATES. 



XIX 



Plate XVII. 



Fi?. 



Page. 



Plate XIX. 



65 Cladophora lanosa 314 



66 arcta 315 



67 rupestris 313 



68 rectangularis 313 



Plate XVIII. 



69 Conferva tortuosa 318 



70 Melagonium 318 



71 Enteroraorpba erecta .... 328 



72 intestinalis 326 



Fig. 



Page. 



73 Ulva latissima 329 



74 Padina pavonia 138 



75 Porphyra laciniata 320 



76 Laminaria Phyllitis 125 



Plate XX. 



77 Batrachosperm. moniliforme 350 



78 Cladophora glomerata .... 344 



79 Draparnaldia nana 357 



80 Micrasterias denticulata . . 364 



PLATES OF FRUCTIFICATION. 



{Fif/ures more or less magnified.^ 



A. — Polysiplionia urceolata. 



Fig. 1. Portion of a brancli. 



2. Capsule more higUy magnified. 



B, — Polysiplionia urceolata. 



Fig. 1. Portion of a branchlet, showing 

 granular fruit (tetraspores) . 

 2. Tetraspore, higUy magnified. 



C. — Ptilota plumosa. 



Fig. 1. Involucre containing favellse. 

 2. Lacinia with tetraspores on 

 short pedicels. 



D. — Plocamium coccineum. 



Fig. 1. Branchlet with a lateral tubercle 

 containing spores. 

 2. Branchlet with stichidia con- 

 taining tetraspores. 



E. — Odonthalia dentata. 



Fig. J . Capsular fruit. 



2. Stichidia, containing tetraspores. 



(Observed in abundance in early 



winter.) 



