114 L. KoLDERL'P Rosenvinge. 



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

 sidering the great variability of A. Pylaii which I have been acquain- 

 ted with on the Western coast of Greenland, I am inclined to 

 believe that this translation is legitimate, bul il must be admitted, 

 that it is very difficult to decide, whether the differences existing 

 between the plants from North-East Greenland and those from 

 the southern part of the West coast are due to the differences 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 л'аг1а11оп of the species has often been taken too 

 little into consideration. The specimens from North-East Greenland 

 are distinguished from those from West Greenland — which I have 

 determined formerly as A. Pylaii 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 

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

 sions, I give here some measurements in centimeters: 



72 + x 



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 oi' 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 laminæ of the two years is marked 

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

 R.Rasmussen (1909). 



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

 Peninsula; Stormbugt. 



Laniinaria Lamx. 

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



Kjellman (1890) p. 25; J.'jnsson (1904) p. 27. 



This species is common in the region explored. A considerable 

 number of specimens have been collected in various localities; only 



