^Q Vol. XLIIL, Art. 1.— K Yendo : 



BÖRGESEN^) discredits the annual shedding of the blade and 

 sticks to the opinion that the blade of A. essalenta elongates cou- 

 tinuously by stipo-frondal growth, its upper part wearing by 

 degrees and so keeping nearly the same length. Phillips^) and 

 Oltmanns^) are not very far frora this view. 



Summing up the statements of the previous writers, I under- 

 stand them to be classifiable briefly as follows : — 

 (1). Alaria plant is pereniiial. 



TuENEE : Historia Facorura. (on A. esculenta). 1809. 

 RuPEECHT : Tange des och. Meeres, (on A. fistidosa and A. 



sp.). 1850. 

 ?Setchell and Gaedner : Algae of N.-W. America, (on 

 A. valida). 1903. 

 (2). Alaria escidenta is perennial and sheds its blade annually. 

 Haevey : Phyc. Brit., I. (sporopliylls also). 1846. 

 Johnstone and Ceoall : Brit. Seaweeds, III. (Sporopylls 



also). 1859. 

 Aeeschoug : Observ. Phyc, V. 1884. 



Kjellman : Handbok i Skandhiav. Hafsalgflora, I. 1890. 

 WiLi,E : Beitr. z. Physiol. Anat. dor Laminariaceen. 1897. 

 Reinke : Stud. z. vergl. Entwicldungsgesch. der Laminari- 



en. 1903. 

 RosENVENGE : On Mar. Algae from N.-E. Greenland, (on 

 A. (jrandlfolia J. xVg.). 1910. 

 (3). Alaria escidenta does not shed its blade periodically. 



Phillips : Notes on Sacc. bidbosa and A. escidenta. 1896. 

 BÖEGESEN : The Mar. Alirae of Faeroes. 1904. 



1) BÖR3ESEN : Note on the Qiiestion whether A. eaculenta sheds its Lamina, &c. 



2) Phillips : Notes on Sacch. hulbosa and .4. esculentd. 



3) Oltmanns : Morph, und Physiol, der Algen. 



