471 



parent; prolifications of'lcn occur on il. A few specimens Ironi 

 Thorshavn somewhat resembled cerlain Greenland specimens which 

 Rosen vinge has re ferred to (3 evanescens, l)nl they not being 

 especially characteristic I think we are justified in referring them 

 to f. edentata. When dried the piants become ahnost blaek and 

 nearly opacpie. The midrib is quite indistinct and receptacles are 

 shorter and broader than in f. eden lu lu. 



A single specimen of typical f. edentata was noteworthy owing 



Fig. 93. Fucus inflatus f. disticha. From Muletangen at Vaags Ejde (Syd.). 1:1. (H. Westergaard del.) 



to its bearing conceptacles in the middle of a branch at a consider- 

 able distance from the apex. 



Fucus inflatus occurs in the littoral zone or (f. edentata) in the 

 uppermost part of the sublittoral; f. disticha belongs exclusively 

 to the littoral zone, and f. tinearis occurs in tide-pools. The large 

 forms of f. edentata require somewhat sheltered coasts, and also 

 grow right in the interior of the fjords even in piaces where the 

 water has a considerable admixture of fresh water; f. disticha can 

 thrive in the most exposed localities. 



Fructifying specimens of this species were found in April, May, 

 June, July and August, consequently, during the summer. Specimens 

 gathered in October and November were sterile; in December a few 

 specimens were found bearing young receptacles. 



