Contribution. I. 49 



f. globosa Kjellm. 



N. Ish. Algfl. p. 232. 

 Bescr. Kho do chorion Rothii f. globosa Kjellm. 1. c. 

 Fig. „ » „ „ „ t. 15, fig. 9-13. 



Syn. Callithamnion Rothii Lyngb. Hydr. Dan. p. 121, t. 41 A. 

 „ floriduluru Lyngb. 1. c. p. 12J, t. 41 D. 



„ „ Sommerf. Suppl. p. 193. 



„ Rothii Sommerf. Suppl. p. 193 et in Act. Ni- 



dros. p. 51. 



Litoral and sublitoral. Within the litoral zone the ty- 

 pical form occurs on rocks, forming more or less dense mats 

 often together with Sphacelaria olivacea. Within the sublito- 

 ral zone it is met with on a depth of 3—8 fathoms, attached 

 to Liihothamnia, Laminaria and other algae. It appears on 

 open coast as well as in sheltered places, and sometimes 

 gregarious in considerable abundance. The form globosa has 

 been found on rocks within the litoral zone, and fastened to 

 Lithothamnia within the sublitoral zone, on open coast. I 

 have sometimes met with a form reminding of Uh. interme- 

 dium Kjellm., with the cells 5 — 8 times the diameter, but 

 sterile. Specimens with young tetrasporangia have been col- 

 lected at the end of June, and at West-Finmarken ripe ones 

 at the end of September. 



Distribution: Commonly distributed along the whole 

 coast; at some places, as Sveerholt, Berlevaag and Vardo, 

 abundant but local; f. globosa found at Sveerholt and Vardo. 



Rhodochorton (?) sparsum (Carm.) Kjellm. 



K Ish. Algfl. p. 234; Callithamnion sparsum Carm. in Hook. Brit. 

 Fl. p. 348. 



Descr. Callithamnion sparsum J. G. Ag. Epicr. p. 14. 

 Fig. „ „ Harv. Phyc. Brit. t. 297. 



Syn. Thamnidium sparsum Kleen, Nordl. Alg. p. 23. 



Sublitoral, found on decaying stems . of. Laminaria hy- 

 perborea. 



