82 M. Foslie. 



Descr. Laminaria flexicaulis a. genuina Le Jol. 1. c. 



„ digitata f. typica Fosl. Lam. Norw. . 69. 



Fig. „ „ „ „ „ t. 4 et t. 5, fig. 1. 



Exsicc. „ „ Aresck. Alg. Scand. exsicc. No. 86. 



f. ensifolia Le Jol. 



Exam. p. 57. 

 Descr. Laminaria flexicaulis d. ensifolia Le Jol. 1. c. 



„ digitata f. ensifolia Fosl. Lam. Norw. p. 79. 



Fig. „ „ „ „ t.5,fig. 2-5ett.6,l-9. 



f. stenophylla Harv. 



Phyc. Brit. t. 338. 

 Descr. Laminaria stenophylla J. G. Ag. Lam. p. 18. 



„ digitata f. stenophylla Fosl. Lam. Norw. p. 74. 



Fig. „ „ var. stenophylla Harv. Phyc. Brit. t. 338. 



„ „ f. stenophylla Fosl. 1. c. t. 3, fig. 5 — 9. 



„ stenophylla Stromf. Isl. Algveg. t. 2, flg. 8. 

 Syn. Fucus bifurcatus Gunn. Fl. Norv. 1, p. 96. 



Laminaria digitata Kleen, Nordl. Alg. p. 33; ex parte. 

 „ ; „ Kjellm. N. Ish. Algfl. p. 299; excl. var. 



„ flexicaulis Kjellm. 1. c. p. 303. 

 „ „ Aresch. Obs. Phyc. p. 9. 



This is one of the most varying species of the Lami- 

 nariacece. The length of full grown specimens is varying be- 

 tween 0.5 and 3.5 m. The variableness is partly founded 

 upon the conditions and localities where the plant grows. 



Stromfelt (Isl. Algveg. p. 45) has blamed me that 

 I have misapprehended the form stenophyUa, and referred 

 to it forms with angustated lamina below, and, therefore, 

 he supposes, I cannot entitle it to rank as a distinct species. 

 He also quotes that he has examined specimens in the Bo- 

 tanical Museum of Upsala, collected at Lodingeu in Nordland, 

 and determined by me. I cannot remember having sent algae 

 to that Museum. In every case f. stenophylla does not occur 

 at Lodingen. I know pretty well the marine vegetation 

 there. In Lam. Norw. I have stated that the lamina of f. 

 genuina not seldom appears with cuniform base. But f. 



