166 KJELLMAN, THE ALG^ OF THE ARCTIC SEA. 



Gen. Ahnfeltia (Fr.) J. G. Ag. 



Alg. Liebra. p. 12; Fr. Fl. Scan. p. 309; spec. excl. 



Ahnfeltia plicata (Huds.) Fr. 



1. c. p. 310. Fuous plicatus Huds. Fl. Augl. p. 589. 



Descr. Ahnfeltia plicata J. G. Ag. Epicr. p. 206. 



Fig. Gymnogongrus plicatus Hahv. Phyc. Brit. t. 288. 



Exsicc. Ahnfeltia plicata Aresch. Alg. Scaiid. exsicc. N;o 77. 



Syn. Ahnfeltia plicata Dickie, Alg. Cumberl. p. 238. 



" " GoBi, Algenfl. Weiss. Meer. p. 39 



» .. Harv. Fl. West. Esk. p. 50. 



» " Kjellm. Spetsb. Thall. 1, p. 20. 



u n Kleen, Nordl. Alg. p. 17. 



Flicus albus Gunn. Fl. Norv. 2, p. 92. 



" plicatus Wg. Fl. Lapp. p. 504. 

 Gigartina plicata Nyl. et Swl. Herb. Fenn. p. 74. 



" )- Post et Eupr. 111. Alg. p. II. 



Gymnogongrus plicatus Dickie, Alg. Walker, p. 86. 



" » RuPR. Alg. Och. p. 326. 



Sphcerococous plicatus Schrenk, Ural. Eeise. p. 547. 



Hahitat. In the Norwegian Polar Sea it is litoral, growing scattered in rock-pools 

 between tide-marks; in the rest of the Polar Sea it is sublitoral, generally occurring 

 in 1 — 5 fathoms water on stony or pebbly bottom together with the usual elements 

 of the LaminariaceEB-formation. It is to be met with both on exposed coasts and in 

 sheltered places, and is known only as sterile. 



Geogr. Distrib. The plant is certainly circumpolar, but occurs nowhere in the 

 Polar Sea in greater numbers. Its maximum of frequency is in the Norwegian Polar 

 Sea. The northernmost locality where it has been found is Skansbay Lat. N. 78° 30'. 



Locality: The Norwegian Polar Sea: Nordlanden, common; Finmarken: Altenfjord 

 and elsewhere according to Wahlenberg. 



The Greenland Sea: the west coast of Spitzbergen, local and scarce. 



The Murman Sea: the coast of Russian Lapland; the coast of Cisuralian Samoyede- 

 land; Kolgujew Isle, Jugor Shar. 



The White Sea: one of the most common algaä. 



The Siberian Sea: the mouth of Koljutshin Bay, local, but pretty abundant; the 

 Tshutsh village Tjapka. 



The American Arctic Sea: the north coast of western Eskimaux-land; Port Kennedy 

 in the arctic American archipelago. 



Bafjin Bay: Cumberland .Sound, plentiful. 



