Contribution. L If 



Fig. Fucus saccharinus Fl. Dan. t. 416. 



£. oblonga J. G. Ag. 

 Lam. p. 12. 

 Descr. Laminaria saccharina b. oblonga J. G. Ag. 1. c. 



„ f. oblonga Fosl. Lam. Norw. p. 96. 



f. longissima (Gunn.) Fosl. 



Lam. Norw. p. 91; Ulva longissima Gunn. Fl. Norv. 2, p. 128. 

 Descr. Laminaria saccharina f. grandifolia Kjellm. N. hh. Algfl. p. 287. 



„ f. longissima Fosl. Lam. Norw. p. 96. 



Yig. „ „ f- grandifolia Kjellm. 1. c. t. 25, fig. 7. 



f. borealis Fosl. 

 Lam. Norw. p. 91. 

 Descr. Laminaria saccharina f. latissima Kjellm. N. Ish. Algfl. p. 287. 

 n „ f. borealis Fosl. Lam. Norw. p. 97. 



f. Agardhii Kjellm. (Fosl.) 



Lam. Norw. p. 91; Laminaria Agardhii Kjellm. Spetsb. Thall. 2. p. 18. 

 Descr. Laminaria caperata J. G. Ag. Lam. p. 13. 



„ Agardhii Kjellm. Spetsb. Thall. 2, p. 18 et N. I. Algfl. 291. 



Fig. „ » » » t, <"• h fi g- 2—3. 



Syn. Ulva latissima Gunn. Fl. Norv. 1, p. 52. 

 Fucus saccharinus Gunn. 1. c. 

 Ulva maxima Gunn. 1. c. 2, p. 127. 

 Laminaria caperata Kleen, Nordl. Alg. p. 32. 



As stated in Lam. Norw. 1. c ., a form of this species 

 occurs at East-Finmarken, which, as far as I am able to 

 judge, must be referred to L. Agardhii Kjell m., common 

 at the coasts of Spitzbergen, Novaya Zemlya and probably 

 also in the White Sea. It is on the other hand so nearly 

 related to certain forms of L. saccharina, that I am unable 

 to draw any limit. According to K j e 1 1 m a n it is different 

 from that species mainly by the wanting of muciferous lacunse. 

 The lacunae are in general pretty common in the lamina by 

 Scandinavian specimens of L. saccharina, sometimes very large, 

 sometimes small, but not seldom quite wanting. As far as 

 I have seen, it depends on the localities and conditions where 

 the plant grows. Cp. Fosl. 1. c. p. 94. 



