26 



magsalik (К. Rosenv. Deux. Mém. 1. с.) on the eastern coast of 

 Greenland. In Kru use's collection only a small, young specimen 

 was found which 1 have referred to this species, although with 

 some doubt. The stipe was almost solid, but the middle layer 

 in several places consisted of a very loose tissue, and small 

 cavities were already formed here and there ; thus the stipe is 

 evidently growing hollow. Muciparous canals abundant in the 

 stipe, in a peripherical circle. Sterile, gathered in June, in a 

 depth of 3 — 30 fathoms. Kruuse's specimen also was gathered 

 in Angmagsalik. 



As to the occurrence of this species in East Greenland, 

 north of Angmagsalik C. Kruuse has given me the following 

 information: iiLaminaria longicruris has not been gathered nor 

 seen by me anywhere (north of Angmagsalik) in East Greenland. 

 In spite of numerous examinations I never found a Laminaria 

 with hollow or inflated stipe, neither have I seen any such 

 drifting or driven ashore, though otherwise it is not unfre- 

 quently seen drifting about the territory of its distribution». 



Gr. or. : Tasiusak. 



46. L. groenlandica K. Rosenv. GrI. Havalg. p. 847, Deux. 

 Mém. p. 53. 



The species is abundantly represented in the collection, 

 and all the specimens are typical , fully agreeing with the 

 description (K. Rosenv. GrI. Havalg. 1. c). The following meas- 

 ures show the size of the specimens, in centimeters. 



stipe 



i length 



Lam. \ 



y greatest breadth 



f length 



Sorus { 



(greatest breadth 



dried 



53 



40 



19 



35 



15 



16 



6 



23 



150 



100 



100 



90 



65 



60 



40 



70 



70») 



62 



42 



35 



17 



14 



15 



35 



40 



, 5 



1 



80 

 20 



40 

 5 





Wit 



hou 



t So 



rus 



M In this case the breadth of the lamina was reduced 12,5% by the 

 drying process. 



