20 M- Foslie. 



only 5 even in the elder parts of the frond. A similar re- 

 lation hos Gobi observed on specimens from the "White 

 Sea and from Novaya Zemlya. Cp. Gobi, Algenfl. "Weiss. 

 Meer. p. 27. All the specimens examined by me at the end 

 of June, in the beginning of July and August were sterile. 

 Distribution: Probably commonly spread all along the 

 open coast. I have taken specimens at Koskjaelhavn, Me- 

 havn, Vadso and at Kjelmo in Sydvaranger. 



Polysiphonia nigrescens (Huds.) Harv. 

 Br. Fl. 2, p. 332; Conferva nigrescens Huds. Engl. Rot. t. 1717. 



f. pectimta Ag. 



Hutchinsia nigrescens /S pectinata Ag. Syst. Alg. p. 151. 

 Descr. Polysiphonia nigrescens a pectinata J. G. Ag. Spec. Alg. 2, p. 1058, 

 Fig. Conferva nigrescens Engl. Bot. t. 1717. 



Exsicc. Polysiplionia Brodiaei Aresch. Alg. Scand. exsicc. Ser. 1, No. 57. 

 „ „ Aresch. Alg. Scand. exsicc. No. 63 ct 152. 



„ nigrescens Aresch. 1. c. No. 62 et 304. 



Syn. Conferva atrorubens Wg. Fl. Lapp. p. 511. 

 Rhodomela gracilis Kleen, Nordl. Alg. p. 12. 

 Polysiphonia nigrescens Kleen 1. c. p. 13. 



At East-Finmarken I have only met with this species 

 in the lower part of the litoral zone, on stones or attached 

 to Fucus vesiculosus and Rhodymenia palmala. Here it ap- 

 pears to prefer sheltered places, I at least have only seen it 

 in the inner part of deep bays. The specimens were small, 

 only 6 — 10 cm. long. In July it was steril. At "West-Fin- 

 marken I have taken it with sporocarps in the middle, of 

 August. 



Distribution: Only found at Kirkenses in Sydvaranger 

 and at Nyborg, at the end of Varangerfjord, where it was 

 pretty plentiful but local. 



Fam. SpongiocarpesB Grev. 



Alg. Brit. p. 68. 



