éo 



M, Foslte. 



Syn. Conferva dichotoma Gunn. Fl. Norv. 2, p. 105. 



elongata 



» 



M 



2, p. .116. 



FucuR flagelliformiR Wg. Fl. Lapp. p. 505. 



All the specimens that I have examined are referrible 

 to the typical form. However I have seen forms som etimes 

 approaching f. rammrMlifera Kjel lm. and sometimes f. 5w&- 

 simplex Kjellm. The last named form has been coUected 

 at Loppen in "West-Finmarken. 



. The species is litoral and sublitoral. In the former zone 

 it occurs on rocks and stones, in rock-pools, or fastened to 

 other algæ, chiefly Fticus serratus and Ildlosaccion ramenta- 

 ceum. At some places, for inst. Sværholt and Pasvig, it forms 

 a pretty broad border in the lowermost part of the zone, so 

 M to determine essentially the character of the vegetation. 

 In the sublitoral zone, where it seems to be less common 

 than in the litoral one, it is fastened to other algæ or stones, 



■-r 



a:id descends to a depth of about 10 fathoms. I sometimes 

 have met with stems of Laminaria hyperborea and L. digitata 

 quite invested with this plant. It appears on open as well 

 as sheltered coasts, hut it seems to thrive best in rather 

 exposed places. Specimens bearing zocsporangia have been 

 coUected in the later half of June, in July and August. 

 Bistrtbution: Common and abundant almost every where. 



Gen. Eudesme J. G. Ag. 



Alg. Syst 2, p. 28. 



Eud esme vires cens (Garm.) J. G. Ag. 



1. c. p. 31; Mesogloia vircacens Carm. in Hook. Brit. Fl. 2, p. 387, 

 Descr, Eudesme virescens J. G. Ag. 1. c. 



Mesogloia virescens J. G. Ag. Spoc. Alg. 1, p, 56. 



Fig, 



v 



» 



» 



Harv. Phyc. Brit. t. 92. 



w 



Ner Am. 1, t. 10, fig. b. 



Exsicc. Castagnea virescens Aresch. Alg. Scand. exsicc. No. 315. 



r 



S^n. Castagnea virescens Kleen, Nordi. Alg. p. 31 



^ Zosteræ Klccnj I c; sec. Kjellm. 1» 9.. p. 81SJ 



? 



f 



