KONGL. SV. VET. AKADEMIENS HANDLINGAK. BAND 20. N:0 5. 223 



Habitat. It occurs in the greatest number and most richly developed on rocky bottom 

 within the sublitoral zone at a depth of 3—15 fathoms, and is met with in exposed as 

 well as sheltered localities. Specimens taken in the latter part of the summer on the 

 west coast of Grreenland bear zoosporangia. 



Geogr. Distrib. It belongs to the American Arctic Sea and Baffin Bay. Its most 

 northern known locality is Whale Island on the west coast of Greenland about Lat. 

 N. 77° 30'. I cannot determine where its maximum of frequency is situate. 



Localities: The American Arctic Sea: Port Kennedy, Union Bay, Assistance Bay, 

 and Hudson Bay. 



Baffin Bay: Cumberland Sound, the west coast of Greenland at several places, as 

 Lichtenau, Julianeshaab, Sukkertoppen, Holstenborg, Egedesminde, Hunde Island, God- 

 havn, Claushavn, Jakobshavn, Rittenbenk, Melville Bay and Whale Island. 



Gen. Phyllaria (Le Jol.) 



Exam. p. 59; spec. excl. 



Phyllaria dermatodea (Db la Pyl.) Le Jol. 



1. 0. Laminaria dermatodea De la Pyl. Prod. Terie ncuve, p. 180. 



Ph. stipitis tela centrali mere parenchymatica a cellulis membrana valde incrassata eminentibus, longissi- 

 mis, plus minus raraosis circumdata; lamina obscure olivaceo-fusca, demiira coriacea vel coriaceo-membranacea; 

 cryptostomatibus in planta juvenili paucis; Tab. 25 fig. 1 — 4. 



f. typica nob. 



f. cryptostomatibus in planta adulta numerosioribns, foveas profundiores, margine elevato circumdatas 

 constituentibus. 



Descr. Saccorhiza dermatodea Parl. New Engl. Alg. p. 95. 

 Fig. Laminaria dermatodea De la Pyl. 1. c, t. 9, fig. G. 

 Exsicc. » lorea Aresch. Alg. Scand. exsicc. N:o 213. 



f. arctica nob. 



f. cryptostomatibus in planta adulta seque ac in planta juvenili perpaucis vel fere nullis, panim immersis, 

 margine nullo circumdatis. 



Syn. Laminaria Bserii Nyl. et Ssel. Herb. Penn. p. 73. 



» » Post, et Eupr. 111. Alg. p. II, sec. Gobi, Algenfl. Weiss. Meer, p. 75. 



» dermatodea J. G. Ag. Spetsb. Alg. Till. p. 28. 



Phyllaria dermatodea Gobi, 1. c. 

 Saccorhiza dermatodea Aresch. Obs. Phyc. 3, p. 11. 



» » J. G. Ag. Enum.; Spetsb. Alg. Till. p. 31; ex parte; Gronl. Alg. p. 110. 



I) » Kjellm. Spetsb. Thall. 2, p. 19; ex parte; Algenv. Murm. Meer. p. 36; 



ex parte. 



Remark on the species. J. G. Agardh in Spec. Alg. has kept up and characterized 

 as distinct species two formerly known Phyllaria^, Ph. lorea and Ph. dermatodea. The 

 same algologist in Symbolce ad Laminarieas points out the existence of decided diffe- 



