m 



M. Fosile. 



zoosporangia and gåmeiangia at the end of May. Tke zoo- 

 sporangia are situated as the gametangia, on different indi- 

 viduals, mostly obovate, 42—60 |x long and 28—36 [i broad. 

 Distribution: Only found at Bugonæs in Sydvaranger, 

 very rare. 



fe 



Fam. Punctariaceæ (Thur.) Kjellm. 



PI. Scand. p. 9j Thur. in Le Jol. Liste Ålg, Cherb. p. 14; lim. mut 



Gen. Desmotrichum Ktitz. 



Phyc. germ, p. 244. 



Desmotrichum undulatum (J. Gr. Ag.) Rke. 



Ostseefl. p, 55j Punctaria undulata J. G. Ag. Nov.p. 15, sec. Spee. 

 Alg. 1, p. 73. 

 Beser, Desmotrichum undulatum Rke 1. c. p. 57. 



Punctaria undulata J. G. Ag. Spee. Alg. 1, p. 72. 

 Fig, Desmotrichum undulatum Rke, Atlas t. 11. 



„ tenuissimum Kiitz. Tab. Phyc, 6, t. 44. 



Exsicc. Punctaria undulata Aresch. Alg. Scand. exsicc. No. 90. 

 Syn, Ulva plantaginifolia Lyngb. Hydr. Dan. p. 31. 



_ L 



I found, in the middle of June, some young and barren 

 specimena of an alga, which I think are to be referred to 

 this spedes. They grew in a rock-pool in the lower part 

 of the litoral zone, fastened to Ceramium rubrum, in a so- 

 mewhat esposed localitye 



Distribution: Only found at KjoUefjord, very rare. 



Gen. Punctaria Grev. 



Alg. Brit. p. XLIT. 



Punctaria plantaginea (Roth) Grev* 



1. c. p. 53; Ulva plantaginea Roth, Cat. Bot. 3, p. 243. 



f. typica,. 



> 



