458 Dansk Botanisk Arkiv, Bd. 3. Nr. 1. 



from the terminal or subterminal cells of the assimalitory fila- 

 ments of the Liagora, as was the view of Kützing^) in regard 

 to similar structures in Liagora Turneri''\ And Howe describes 

 and gives figures of this continuity, but he points out himself 

 that the observed evidences of direct continuity were not so 

 numerous as he might wish. 



I have not in my material been able to find any organic 

 continuity between this organism and the host-plant, and I am 

 therefore most inclined to consider it as an independent plant. 

 As is already pointed out by Dr. Howe it seems both easier 

 and more probable to consider these bodies as independent endo- 

 phytic structures. 



Finally I can only wish, just as Dr. Howe does, that some 

 one, who has access to suitable living material, would be able to 

 solve the question by means of a thorough examination. 



38. Scinaia complanata (Collins) Cotton. 



Galaxaura Lamouroux, 



When I worked out my material of this genus I, of course, foun- 

 ded my determinations on the rather recently published compre- 

 hensive monograph by Kjellman. 



The material I have collected of this genus was rather poor, 

 these plants being not very attractive, and rather slow and dif- 

 ficult to dry and taking up much space in the bottles. Neverthe- 

 less through Kjellman's work I arrived at the conclusion that 

 eleven species were present at the islands. 



But I want to point out that the determination of the species 

 from the work of Kjellman is not without difficulty. Many 

 of his species are surely based upon scanty material and are 

 often at the best only varieties or forms of the same plant. 



The highly interesting and instructive examinations by Dr. 

 Howe ^) have amply proved that this is the case. The fact is that 

 this well known American investigator has arrived at the con- 



1) KtJTziNG, F., Tab. phycologicæ, vol. VIII, pi. 90. 

 ^) Howe, M. A., in Brooklyn Botanic Garden Memoirs, vol. I, 1918, 

 p. 191. 



