50 M. Foslie. 



Distribution: Only found at Sveerholt and Syltefjord, 



rare. 



Subgen. 2. Thamniscus Kjellm. 

 Spetsb. Thall. 1, p. 29. 



Rhodochorton mesocarpum (Carm.) Kjellm. 

 N. Ish. Algfl. p. 234; Callithamnion mesocarpum Carm. in Hook. 

 Brit. Fl. 2, p. 348. 



f. penicilliformis Kjellm. 



Spetsb. Thall. 1, p. 30. 

 Descr. Thamnidium mesocarpum f. penicilliformis Kjellm. 1. c. 



Khodochorton „ „ „ N. Ish. Algfl. p. 235. 



Fig. „ „ „ „ 1. c. 1. 16, fig. 6-7. 



Litoral and sublitoral, epiphytic on other algae, as Ghceto- 

 morpha melagonium, Halosaccion ramentaceum, Ptilota plu- 

 mosa and pectinata. It seems to be best developed on expo- 

 sed places, but has also been found in sheltered localities, 

 though never in the deeper bays. Specimens with tetraspo- 

 rangia have been collected in the middle of June and at the 

 end of August. 



Distribution: Scattered along the unsheltered part of 

 the coast but very scarce (Sveerholt, Kjollefjord, Mehavn, 

 Havningberg), 



Fam. Wrangeliaceae (J. Gr. Ag.) Hauck. 



Meeresalg. p. 14; J. G. Ag. Spec. Alg. 2, p. 701; lim. mut. 



Gen. Chantransia (D. C.) Fries. 



Syst. Veg. p. 338; DC. FL Fr. 2, p. 49, lim. mut. 



^ 



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

 Spetsb. Thall. 1, p. 4; Callithamnion efflorescens J. G. Ag. Spec. 

 Alg. 2, p. 15. 



