KONGL. SV. VET. AKADEMIENS HANDLINGAR. BAND. 20. N:oO 5. ive 
Syn. Ascopbyllum nodosum Gost, Algenfl. Weiss. Meer. p. 52. 
Fucodium nodosum J. G. Ag. Spetsb. Alg. Till. p. 27, 28 et 31; Gronl. Alg p. 110 
Fucus nodosus CroauL, Fl. Dise. p. 457. 
» » Dickie, Alg. Sutherl. 1, p. 140; Aly. Cumberl p. 236. 
» » Gunn. Fl. Norv. 1, p. 83. 
» » Post. et Rupr. Ill. Alg. p. IL. 
» » Nyl. et Sel. Herb. Fenn. p. 73. 
» » Wea. Fl. Lapp. p. 499. 
Halicoceus nodosus Anescu. Phye. Scand. p. 254. 
» » KuEEN, Nordl. Alg. p. 31. 
Halidrys nodosa Lynes. Hydr. Dan. p. 37. 
Ozothallia nodosa KJELLM. Spetsb. Thall. 1, p. 3. 
Habitat. On the arctic coast of Norway this species is litoral, occupying nearly 
the middle part of the litoral zone. It occurs on exposed coasts as well as in the 
interior of deep bays, but seems to prefer such places as are sheltered from the vio- 
lence of the waves. It is gregarious, occurring in some places in more considerable 
masses than other Mucacew. It generally grows mixed with such alew. I have 
found specimens with plenty of receptacles in July and the earlier part of August on 
the coast of Finmarken. It was always sterile here in the latter part of August, but 
new receptacles began to be formed at the beginning of October. Accordingly, it ap- 
pears to fruit here at least twice a year, probably even more often. Le Jouis states 
that it bears receptacles in winter on the coast of France. At Bohuslan it commences to 
develop such organs in March and April, the period of fructification ending in June. 
Cp. ARescu. |. c. 
Geogr. Distrib. 1 cannot state at present any certain limits for its distribution in 
the Arctic Sea. It is known with certainty to occur in the Norwegian Polar Sea, the 
western Murman Sea, the White Sea, and Baffin Bay. The alga is also reported from the 
eastern Greenland Sea, but it does not appear to be quite sure that it really grows 
there. It was brought home from there by the Swedish expedition of 1868, and said 
to be collected at several places, as Icefjord, Smeerenberg Bay, Kobbebay, and the bays 
on the north coast. I have had the opportunity of examining the three first-mentioned 
localities, but I failed to detect any traces of this plant. But it was found washed 
ashore at South Cape, where however it had probably been carried from the south. | 
saw it floating on the surface of the sea at several places between Norway and Spitz- 
bergen. The opinion that it does not grow on the coasts of Spitzberg is supported by 
the fact of its not having been observed on the west coast of Novaya Zemlya, whose 
Flora resembles that of Spitzbergen so nearly. Already in the White Sea this plant 
is rarer than on the north coast of Norway, and east of that Sea, on the coast of 
Cisuralian Samoyede-land, it has not been found at all. Certainly it reaches its mani- 
mum of frequency on the north coast of Norway. The most northern place where it 
ig said to have been found, is the north coast of Spitzbergen. 
Localities: The Norwegian Polar Sea: Nordlanden, common and abundant; Tromsé 
amt, common and abundant at the town of Tromsé, at Rend and Carlsé; Finmarken: 
