194 KJELLMAN, THE ALG^. OF TITE ARCTIO SEA. 



The proper time of fructification here is probably in the inonth of July. The plant 

 is not to be found during the winter according to Wahlenberg. 



Geoyr. Distrib. It belongs only to the southern part of the Atlantic region of 

 the Polar Sea, not goiug so far northward as to Finmarken. 



Localities: The Norwegian Polar Sea: Nordlanden coramon, y^Nnniegia arctica-n 

 (Berggeen), according to J. G. Ag. Enum. 



Gen. Halidrys (Lyngjb.) Grev. 



Alg. Brit. p. XXXIV; Lyngb. Hydr. Dan. p. 37; lim. raut. 



Halidrys siliquosa (L.) Lyngb. 

 1. c. Pucus siliquosus L. Spec. Plant. 2, p. 1160. 

 Beser. Halidrys siliquosa J. G. Ag. Spec. Alg. 1, p. 236. 

 Fig. » » Harv. Phyc. Brit. t. 66. 



Exsicc. » )i Aresch. Alg. Scand. exsicc. N:o 151. 



Syn. Fucus siliquosus Gunn. Fl. Norv. 1, p. 83. 

 » » Wg. Fl. Lapp. p. 498. 



Halidrys siliquosa .T. G. Ag. Enum. 



» » Akesoh. Phyc. Scand. p. 253. 



» » Kleen, Nordl. Alg. p. 31. 



Habitat. It belongs to the upper part of the sublitoral zone, growing in from 

 one to three fathoins 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 Wahlenberg 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. 



Loralities: The Norwegian Polar Sea: Nordlanden common, »Norvegica arctican 

 (Berggren); Finmarken (Aresch. and Wahlenb.). At Maasö I found a number of ro- 

 bust, vigorous specimens washed ashore. 



Gen. Ozothallia Dosne et Thur. 



Rech. Fuc. p. 13. 



Ozothallia nodosa (L.) Dcsne et Thur. 



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

 Descr. Fucodinm nodosum J. G. Ag. Spec. Alg. 1. p. 206. 

 Fiy. Fucus nodusus Harv. Phyc. Brit. t. 158. 

 Exsicc. Halicoecus nodosus Aresch. Ala;. Scand. exsicc. N:o 51. 



