142 Vol. XLIII., Art. l.-K. Yendo: 



Contents. 



Page. 



Introduction 1 



Oeneral Morphology 3 



Stipe 4 



Blade 11 



Midrib 15 



Sporophyll 22 



Holdfast 27 



Cryptostomata 28 



Mucilage Glands 36 



Monstrosities of the frond 42 



Development and Life History of Alaria 44 



Economic Uses of Alaria 53 



Distribution and Habitat 60 



Systematic Position of the Genus Alaria 70 



Synoptical Key to the Species 74 



Species 76 



Alaria fistulo.ia P. et K 76 



A. macroptera (Paipr.) 79 



A. ochoteiTsis sp. uov 84 



A. pr<rlonga Kjellm 86 



A. dolichorhachis Kjellm Si) 



A . marcjinaia P. et K 93 



A. Pi/laii Grev .* 97 



A. crassifoUa Kjellm 105 



A. esculenta Grev 108 



A. valida Setch. et Kjellm 116 



A. nana Schrader 1 18 



A. grandifoUa J. Ag 120 



A. angusta Kjellm 123 



A. tœninta Kjellm 127 



A. lanceolata Kjelm 129 



Species Doubtful 131 



Laminaria muscefolia De la Pyl , 131 



Alaria Deli.su Grev 132 



A. linearis Strömf 132 



A. flagellaris Strömf 132 



Species Removed 135 



Alaria amplexicaulis Martens 135 



A. pinnatißda Harv 135 



List of Literature 136 



Index 142 



