Contribution. I. 



81 ■ 



' T 



F 



^f ^ 



> 



- t 



(S';yn. Fucus digitatus Wg. Fl. Lapp, p. 492; ex parte. 



„ „ Fl. Ban. t. 392. 



Laminaria Clustoni Kjellm. N. Ish. Algfl. p. 298. 



^ 



Sublitoral, occurring in 2 — 10 fatiioms water, or pro- 

 bably descending up to a still greater depth. It is luxuriant 

 and vigorous along the open coast, particularly in much ex- 

 posed localities. Here the stipe generally has a height of 

 1.5 — 2 m. by a diameter in the lower part of 3 — 5 cm. The 

 lamina has a length of 40 — 60 cm. But the plant often gets 

 much larger. In deep water or in somewhat sheltered places 

 the stem becomes smaller and the lamina proportionally lar- 

 ger, often with fewer and broader segments. Cp. Fosl. Le. 

 It enters pretty far into the greater bays but here it does 

 not thrive, getting small and stunted. I do not know when 

 it develops its reproductive organs. 



Disiributiom The typical form comraon and very abnn- 

 dant all along the open coast; f. compressa only found at 

 Berlevaag, scarce. 



Laminaria digitata (L.) Edm. 



Fl. Slietl. p. 54, sec. Le Jol. Ex. p. 56; Fucus digitatus L. Mant. 1S4. 



L 



f. valida Fosl, 



Bidr. p. 27. 

 i^escT. Laminaria flexicaulis f. valida Foal. 1. c. 



Fig. 



3? 



n 



digitata f. valida FosL Lam, Norw. p. 65. 



n 



» 



n 



» 



t. 3, % 1-4. 



t 



ifi i' 





■ 



f. grandifolia Fosl. 



Lam. Norw. p. 60. 

 Beser. Laminaria didtata f. 



grandifolia Fosl. 1. c 



4 



f. complanata Kjellm. 



Kariska hafv, Algveg. p. 26. 

 Beser. Laminaria digitata f. complanataKjellm. 1. c. et Alg. Murm. Meer. 38. 



Fig. 



» 



n 



j) 



Kjellm. Kar. hafv. Aig. t. 1, 14—18, 



f. genuina Le Jol. 



Exam. p. 59, 



6 



