194 KJELLMAN, THE ALG OF THE ARCTIC SEA. 
The proper time of fructification here is probably in the month of July. The plant 
is not to be found during the winter according to WAHLENBERG. 
Geogr. Distrib. It belongs only to the southern part of the Atlantic region of 
the Polar Sea, not going so far northward as to Finmarken. 
Localities: The Norwegian Polar Sea: Nordlanden common, »Norvegia aretica» 
(Brerceren), according to J. G. Ac. Enum. 
Gen. Halidrys (Lynas.) Grev. 
Alg. Brit. p. XXXIV; Lynes. Hydr. Dan. p. 37; lim. mut. 
Halidrys siliquosa (L.) Lynes. 
1. ec. Fucus siliquosus L. Spee. Plant. 2, p. 1160. 
Descr. Halidrys siliquosa J. G. Ac. Spec. Alg. 1, p. 236. 
Fig. » » Harv. Phye. Brit. t. 66. 
Exsice. » » ArescH. Alg. Scand. exsicc. N:o 151. 
Syn. Fucus siliquosus Gunn. Fl. Norv. 1, p. 83. 
» » We. Fl. Lapp. p. 498. 
Halidrys siliquosa J. G. Ac. Enum. 
» » ArescH. Phye. Scand. p. 253. 
» » KueEN, Nord]. Alg. p. 31. 
Halitat. It belongs to the upper part of the sublitoral zone, growing in from 
one to three fathoms water on stony or gravelly bottom. Besides this, I know nothing 
about its habitat in the Polar Sea. 
Geogr. Distrib. It is known only from the Atlantic region of the Polar Sea. I 
cannot decide with certainty whether it occurs within the whole of this region or not. 
According to ArescHouG and WanLENBERG it grows also in its northern and eastern 
parts at Finmarken. I have certainly found it here myself, though never attached, but 
only washed ashore. 
Localities: The Norwegian Polar Sea: Nordlanden common, »Norvegica arcticay 
(Beracren); Finmarken (Arescu. and Wantens.). At Maasé I found a number of ro- 
bust, vigorous specimens washed ashore. 
Gen. Ozothallia Dcsne et THur. 
Rech. (ne. p. 13, 
Ozothallia nodosa (L.) Dcsng et Tuur. 
l. ec. Fucus nodosus L. Spec. Plant. 2, p. 1159. 
Descr. Fucodium nodosum J. G. AG. Spee. Alg. 1. p. 206. 
Fig. Fucus nodusus Hary. Phye. Brit. t. 158. 
Exsice. Halicoccus nodosus ArnscH. Ale. Seand. exsice. N:o 51. 
