Contribution. I. 



107 



I 5 



Beser. Chætoptcris plumosa J. G. Ag. Spee. Alg. 1. p. 41, 



Fig. 



n 



» 



n 



n 



3) 



» 



Kittz. Tab. Phyc. 6, t. 6. 

 ArescL Obs. Phyc. 3, t. 2, fig. 4. 

 Kjellm. Spetsb. Thall. 2, t. 2, fig. '2—3 



j 



Exsicc. Sphacelaria plumosa Arescli. Alg. Scand. exsicc. Xo. 107, 



Cbjefcopteris plumosa Arescli. 1. c. No. 408. 



Si/n. Conferva pennata Wg. Fl. Lapp p. 512; ex parte. 



Litoral and sublltoral. In tbe former instance growing 

 in rock-pools or on stenes at low-water mark. In the lat- 

 ter instance mostly fastened to roots of Laminaria, descen- 

 ding to a depth of 10 — 15 fatboms, on open coasts as well 

 as sheltered ones. It is smaller tlian farther soutb, generally 

 2—4 cm. high. In the summer I have met with but barren 

 specimens. At Nordland it has beenfound with zoosporangia 



in Marcb. 



In Krit. fortegn, p. 121 I have referred Fucus hirsutus 



Gunn. Fl. Norv. 2, p. 25 to Cladostephus spongiosus, accor- 



ding to Gunnerus occurring «in mari finm. rarior», I 



do not think this spe eies is to be found at the coast of the 



present Finmarken. It may perhaps have been Chætopteris 



plumosa^ or, if Cladostephus spongiosus, collected in the most 

 northern part of the present Tromso amt. 



Distribution: Scattered and scarce along the whole coast. 

 Perhaps more commonly diffused within the sublitoral zone 

 than hitherto known. 



I 

 I 



i! 

 ill 



I ' 



II 



Gen. Sphacelaria (Lyngb.) J. G. Ag. 



Spee. Alg. 1, p. 29j Lyngb. Hydr. Dan. p. 103; spee, e cl. 



Sphacelaria racemosa Grev- 



Scot. Crypt. Fi.^ 2, t. 96, sec. Harv. Iliyc. Brit. t. 349. 



f. arcfica (Harv.) Uke. 



Ostseefl. p. 40; Sphacelaria arctica Harv. sec, J. G. Ag. GrOnl, 



Alg. p. 110. 



pé.i€r, Sphacelaria arctica Kjellni. Spetsb. Tliall, 2, p. 34. 



