Contribution. I. 



123 



*i 



metimes again bear some branch of second order. I have 

 also met with a transition between this form and the typi- 

 cal one. Provisionally I refer to the present species a sim- 

 ple dark green Enteromorpha, which, with regard to the 

 structure, differs 'rather much from E. compressa, such as 

 the species is characterized by A h 1 n e r. 



The species in question occurs on rocks or in rock- 

 pools within the litoral region. Specimens coUected in the 



middle of July were sterile. 



Distrihution: Found at Berlevaag, pretty plentiful but 



local, and at Kiberg, rather scarce. 



Enter.omorpha complanata Ktitz. 



Specc. Alg. p. 430; Cfr. Ahln, Enterom. p. 25. 



f. suhsimplex (Aresch.) Ahln. 



1. c. p. 28; Enteroinorplia compressa var. subsimplex Aresch. Alg. 



Scand. exaicc. Nr. 177. 



^escr. Eiiteromorpha cotnplanata v^r. aubsimplex Aliln. 1. c. p. 28. 



„ fig. 2 c. 



compressa „ 



„ Aresch. Alg. Scand. ex- 



sicc. Nr 177. 



8yn, Enteromorpha compressa a subsintplex J. G. Ag. Alg, Syst. 



3; p. 137. 



The Finmarkian specimens agree well with the above 

 ciuoted form distribnted by Areschoug. The plant be- 

 comes here until 60 cm. long. It grows in rock-pools or 

 sballow sandy pools between tides. Specimens tåken in 

 July have been sterile- 



Bistrilmtion: Found at Berlevaag and Mehavn, pretty 



plentiful . 



-r 



Enteromorpha usneoides (Bonnem.) J. G. Ag. 



Alg. Sysl. 3. p. 157; Ulva usneoides Bomiem. sec, J. G. Ag. 1. c. 

 ^(^scr, Enteromorpha usneoides J. G. Ag. 1. c. 



^%- 



plumosa Ahln. 1. c. p. 37. 





P 



n 



» 



fig- 4. 



