ww 
KONGL. SV. VET. AKADEMIENS HANDLINGAR. BAND. 20. N:0 5. 3] 
The American Arctic Sea; Port Kennedy, Assistance Bay, Beechy Island. 
Bajin Bay: Cumberland Sound, common; Cape Boven; the west coast of Green- 
land, probably commonly distributed and abundant. I have seen f. typica from Tes- 
sarmiut, Friderikshaab, Neuherrnhut, and Godhavn. Besides, it is reported from Ja- 
cobshayvn, Rittenbenk, Whale Sound, and Discovery Bay. 
Chetomorpha Wormskioldii (FL, Dan.) nob, 
Conferya Wormskioldii Fr. Dan, t. 1547. 
Deser. et Fig. Conferva Wormskioldii Lynes, Hydr. Dan. p. 158; t. 55. 
Habitat. It grows according to labels by J. Vani vad saxa et rupes in sumimo 
refluxu maris», 
Geogr. Distrib. It is known only from Baffin Bay. 
Locality: In the herbarium of the Copenhagen Museum there are found specimens 
taken at Godthaab. It is said by Fasricius to occur »sat vulgaris at litora maris 
Groenlandii» (Cp. Lynas. 1. c.). 
Chetomorpha Linum (Rorn) Kirz. 
Phye. Germ. p. 204. Conferva linum Rovn, Cat. Bot. 3, p. 257. 
Descr. Cheetomorpha linum Kurz. Spee. Alg. p. 378. 
Fig. » » «Tab, Phyc. 3, t. 55. 
Syn. Cheetomorpha linum Gopi, Algenfl. Weiss. Meer. p. 87. 
Halitat. Nothing is known in this respect. 
Locality: The White Sea: at Solowetzki Isles according to Gost |. e. 
Chetomorpha Tortuosa (Dittw.) Kieren. 
Nordl. Alg. p. 45. Conferva tortuosa Ditiw. Brit. Conf. Syn. p. 46. 
‘ 
Descr. et Fig. Counferva tortuosa ARescu. Phye. Scand. p. 433 et t. 3. f G. 
Exsice. » » ArescH. Alg. Scand. exsicc. N:o 29. 
Syn. Cheetomorpha tortuosa Dickrn, Alg. Cumberl. p. 240? Nonne Rhizoclonii spec. 
» » Kueen, Nordl. Alg. p. 45; fide spec. 
Conferva » Sommerr. Suppl. p. 196 (?) Nonne Rhizoclonii spec. 
Habitat. I have found this species only in lagoons on sheltered coasts, forming 
dense masses of considerable size that lie loose on the bottom or float on the sur- 
face of the water. On this account it seems to me improbable that SOMMERFELT'S 
Conferva tortuosa, which is said to grow »supra arenam in rimis rupium», should be 
the present species. Just as Chwtomorpha tortuosa Dickie (I. ¢.), it may possibly be 
some species of Rhizoclinium. The specimens of Chetomorpha tortuosa in KLEEN’s her- 
barium, according as I understand this species, have grown in the same kind of loca- 
lities as those in which I have found the plant. Only sterile specimens are known 
from the Polar Sea. 
K. Vet. Akad, Handl. B, 20. N:o 5, 
40 
