64 M. Foslie. 



Ozothallia nodosa (L.) Dcsne et Thur. 

 1. c. Fucus nodosus L. Spec. Plant. 2, p. 1159. 

 Descr. Fucodium nodosum J. G. Ag. Spec. Alg. 1, p. 206. 

 Fig. Fucus nodosus Harv. Phyc. Brit. t. 158. 

 Exsicc. Halicoccus nodosus Aresch. Alg Scand. exsicc. Nr. 51. 

 Syn. Fucus nodosus Fl. Dan. t. 146. 



„ „ Gunn. Fl. Norv. 1, p. 33. 



„ „ Wg. Fl. Lapp. p. 499. 



Halidrys nodosa Lyngb. Hydr. Dan. p. 37. 



„ „ Sommerf. in Act. Nidros. p. 51. 



Ascophyllum nodosum Gobi, Algenfl. Weiss. Meer. p. 52. 

 Halicoccus nodosus Kleen, Nordl. Alg. p. 31. 



Chiefly a litoral alga, occupying a broad border mostly 

 in the middle part of the zone. In the inner part of some 

 of the greater bays, for inst. Jarfjord, it descends a little 

 below low-water mark. The plant is vigorously developed, 

 attaining a length of 1.5 m. and more. It bears plenty of 

 receptacles in July. The spores are generally ripe in the 

 middle of the month. Almost all the specimens I have seen 

 in August, even in the beginning of the month, were sterile. 



Distribution: Common and in great abundance everywhere. 



Gen. Fucus (Tourn.) Dcsne et Thur. 

 ^ech. Fuc. p. 13; Tourn. Inst. Herb. 3, p. 565; char. mut. 



Fucus serratus L. 

 Spec. Plant. 2, p. 1158. 



f. grandifrons Kjellm. 

 N. Ish. Algfl. p. 245. 

 Descr. Fucus serratus f. grandifrons Kjellm. 1. c 



f. typica Kjellm. 



1. c. 

 Descr. Fucus serratus f. typica Kjellm. 1. c. 

 Fig. „ „ Harv. Phyc. Brit t. 47. 



Exsicc. „ n Arescb. Alg. Scand. exsicc. Nr. 55. 



f. angusta Kjellm. 

 1. c. 



