Contributiou. I. 



4 



35 



^'-1 



f. suhsimplex Riipr. 



Alg. Odl. p. 270. 

 Descr. Halosaccion soboliferum var. subsimplex Piupr. 1. c. 



^^ r 



Fig, „ ramentacGum f. subsimplex Kjellm. Isli. Algll. 1. 13, fig. 3, 



f. densa Kjellm. 



N. Ish. Algfl. p. 196. 

 Descr. Scytosiphon ramentaceus Lyngb. Hydr. Dan. p. 61. 

 Fig. Fucus ramentaceus Turu. Hist. Fuc. t. 149. 

 Exsicc. Halosaccion ramcntaceum Aresch. Alg. Scaud. exsicc. No. 205. 



r 



Syn, Fucus ramentaceus Gunn. FL Norv. 2, p. 79. 



n 



Wg. Fl. Lapp. p. 504. 



' „ barbatus Gunn. I. c. p. 129. 

 Ulva sobolifera Gunn. I. c. p. 105. 

 Scytosiplion ramentaceus Lyngb. ITydr. Dan. p. Qi, 

 Dumontia raraentacea Arescl!. Phyc. Scaud. p. 313. ' 



This species is probably tlie most common of tlie Flori- 

 deæ of East-Finmarken. It is aiso here somewliat variable, 

 though it appears as a rule under the form densa along the 



+ 



open shore. This form grows gregarious in great niimber of 

 individuals. Now and then f. ramosa and f, subsimplex are 

 met with. The latter becomes mostly coarse on unsheltered 

 coast, in q_uiet bays on the other hand, it gets much thinner. 

 Of the form rolusta I have not seen typical speciraens at 

 East-Finmarken, and here it seems to be very rare. A conple 

 of- speciraens referred to this form are perhaps more really 

 to be regarded as a transition between f. densa and f. rolu- 

 sta, Yet in Tromso amt I have collected speciraens which 

 .almost fuUy coincide with Spitzbergian ones, and therefore 

 il is most likely to suppose, thatit also occurs at Finmarken. 



■ 



The present plant is litoral as well as sublitoral, yet it 

 chiefly appears in the litoral zone. At some placesit forms 

 a br-oad girdle from about half tide to a few feet below ex- 

 treme low-water mark. Sometimes it is attached to other 



r 



.algae, as Fticaceae in the litoral zone and roots of Laminaria 

 m the sublitoral one. But it occurs particularly and best 



iii 



