114 L. Koi.DKiu I' I<()si;n\ iN«;i:. 



out in particular its close relation to the var. membranacea. Con- 

 sidering the j^real variability of A. Pijlaii which I have been ac(|uain- 

 tfd wilh on tin- Western coast of Greenland, 1 am inclined to 

 believe that this translation is legitimate, but il must l)e admilled, 

 that it is very dillicull to decide, whether the dilTerences existing 

 between the plants from North-East Greenland and those from 

 the southern part of the West coast are due to the difïerences in 

 the external conditions or are of specific value. When considering 

 the great number of species of Alaria described, I cannot help 

 thinking, that the variation of the species has often been taken loo 

 little into consideration. The specimens from North-East Greenland 

 are distinguished from those from West Greenland — which I have 

 lietermined formerly as A. Pijlaii a typica and ß membranacea -— in 

 my opinion only by their long and well-developed rachis. 



The collection contains unfortunately only a few complete and 

 well-developed specimens. In order to give an idea of the dimen- 

 sions, I give here some measurements in centimeters: 



72 — a: 



The costa was in all cases convex on both sides, the cryptosto- 

 mata were usually very distinct. As will be seen from the table, 

 the sporophylls attain a very considerable length; their sterile upper 

 part is sometimes bipartite. 



According to Kjellman (1877, p. 11) the lamina of Alaria grandi- 

 folia is shed in winter at Spitzbergen, and that seems to be the case 

 also at the shores of North-east Greenland. The lower part of the 

 old lamina remains however and is to be found still in the following 

 summer. The limit between the lamiiiæ of the two years is marked 

 as a strong narrowing (fig. 5), much as in A. esculenta, as shown by 

 R. Rasmussen (1909). 



Loc. Along Koldewey Island, ca. 5—15 meters; along Cape Bismarck 

 Peninsula; Stormbugt. 



Laniinaria Lamx. 



25. L. saccharina (L.) Lamx. var. grandis Kjellm. 



Kjellman (189Ü) p. 2.'); Jonsson (1904) p. 27. 



This species is common in the region explored. A considerable 

 number of specimens have been collected in various localities; only 



