KONGL. SV. VET. AKADEMIENS HANDLINGAR. BAND. 20. N:0 5. 129 



Gen. Ghantransia (DC.) Fries. 



Syst. Veg. p. 338; Df:. Fl. Fr. 2, p. 49; lim. raut. 



Ghantransia efflorescens (J. G. Ag.) Kjellm. 



Spetsb. Tliail. 1, p. 4. Callitharanion efflorescens J. G. Ag. Spec. Alg. 2, p. 15. 



f. tenuis. 



f. laxe c.iespitosa, qvam forma typica in Sinu Codano provciiienfe multo teniiior et Hacxidior; articulis 

 axis principalis 5 /(. diametro iion attingeutibus, (in f. typica 6 — 8 /(.) 

 Fig. Ghantransia efflorescens f. tenuis tab. nostra 12, fig. 1 — 2. 

 Ewsicc. Gfr. Trentepohlia Daviesii var. a Akescii. Alg. Scand. exsicc. N:o 16. 

 Si/n. Ghantransia Daviesii Gobi, Algenfl. Weiss. Meer, p. 50. 



» efflorescens Kjellm. Spetsb. Thall. 1, p. 14; Algenv. Murm. Meer. p. 14; Kariska 



hafvets Alg. p. 20. 



Remark on the deterinination of the species. The Chantransia efflorescens found by 

 me at several places in the Polar Sea, differs from that occurring on the coast of Bo- 

 huslän and distributed by Areschoug 1. c. by being scarcely half as thick, and more 

 flaccid, and by forming thinner tufts than the Bohusliin form. I have assumed it to 

 be the same form as that reported by Gobi from the White Sea, and propose to give 

 it the name of tenuis. 



Hahitat. This alga is snblitoral everywhere in the Polar Sea, and grows attached 

 to varii)us other algas, as Lithothamnion soriferum, Oilonthalia dentnta, Polysi-plionin arc- 

 tica, Delesseria Bcerii, Clw^tornorplia melncfonhim a. o. It has not been met with in the 

 interiör of deep bays. It lives scattered. It has been found with reproductive organs 

 at Spitzbergen in July and August, on the west coast of Novaya Zemlya in Jtily 

 and on the eastern coast at the end of August. On the coast of Sweden I have ob- 

 served sporiferous specimens in August. 



Geogr. Distrib. It belongs both to the Atlantic and the arctic region of the Polar 

 Sea, and is pretty widely spread within the latter. I have found it to be scarce every 

 where. Its maximum of frequency seems to be in the White Sea, Cp. Gobi 1. c. 



Localities: The Nonoegian Polar Sea: Finmarken at Maasö, scarce and local. 



The Greenland Sea: the north and north-west coasta of Spitzbergen, .scarce and local. 



The Murinan Sea: the west coast of Nova}^ Zemlya, scarce and local. 



7Vie White Sea: common and abundant. 



The Kära Sea: Uddebay on the east coast of Novaya Zemlya, scarce. 



Chantransia Daviesii (Dillw.) Thur. 



in T,e .Tol. List. Alg. Cherb. p. 106. Gonferva Daviesii Dillw. Brit. Conf. Intr. p. 73. 

 Desor. Callithamnion Daviesii J. G. Ag. Epicr. p. 8. 

 Fig. » » Harv, Phyc. Brit. t. 314. 



Syn. Ghantransia Daviesii Kleen, Nordl. Alg. p. 16. 



Hahitat. This species grows scattered, fastened to litoral algte, for inst. species of 

 Corallinn and Cladoflwra, a. o. In the Polar Sea it bears spores at least diiring the months 

 of July, August, and September. 



K. Vet. Akad. HaudL B. 20. N:o 5. i • 



