166 KJELLMAN, THE ALG OF THE ARCTIC SEA. 
Gen. Ahnfeltia (Fr.) J. G. Ac. 
Alg. Liebm. p. 12; Fr. Fl. Scan. p. 309; spec. excl. 
Ahnfeltia plicata (Hups.) Fr. 
1. c. p. 310. Fucus plicatus Hups. Fl. Angl. p. 589. 
Descr. Ahnfeltia plicata J. G. Ac. Epicr. p. 206. 
Fig. Gymnogongrus plicatus Harv. Phyce. Brit. t. 288. 
Exsice. Ahnfeltia plicata ArEscu. Alg. Scand. exsice. N:o 77. 
Syn. Ahnfeltia plicata Dicxip, Alg. Cumberl. p. 288. 
» » Gost, Algenfl. Weiss. Meer. p. 39 
» > (Harv. Fl. West. Hsk. p. 00: 
» »  KygELLM. Spetsb. Thall. 1, p. 20. 
» »  KueEn, Nord]. Alg. p. 17. 
Fucus albus Gunn. Fl. Norv. 2, p. 92. 
» plicatus We. Fl. Lapp. p. 504. 
Gigartina plicata Nyl. et Sel. Herb. Fenn. p. 74. 
» ~,) pPost vet Ruprs TE Ales vps ie 
Gymnogongrus plicatus Dickrz, Alg. Walker, p. 86. 
» » Rupr. Alg. Och. p. 326. 
Sphzerococcus plicatus Scurenk, Ural. Reise. p. 547. 
Hatitat. 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 Laminariacex-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 alge. 
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. 
Baffin Bay: Cumberland Sound, plentiful. 
