m 



M. Foslte. 



largest near tbe middle layer. Cp. Kj ellm. 1, c. t. 25, fig. 



10. 



The muciferous lacunæ seem in general to be * more 



numerons by L. Gunneri and of ten al so larger, especially in 

 the lamina, than by L, nigripes. 



The sorus is never developed to tbe base of tbe lamina 

 such as by L. nigripes. Cp. Kjellm. 1. c. p. 297. A moon- 

 shaped, 5 — 8 cm. high part of tbe base is always barren. 

 From here it forms a broad girdle, 10—30 cm. upwards, com- 

 inonly 15 — 25 cm., and sometimes extending to tbe top of 

 the segments. 



L. Gunneri appears to live in the npper part of tbe 

 sublitoral region, though probably fartber down tban L. nt- 

 gripes^ because tbe former bas been found only after heavy 

 Miiter-gales, but tbe latter also wasbed asbore in tbe summer. 

 The plant is fastened to stones, or more often to dying stems 



fr 



of Alaria and Laminaria hyperhorea. Most of tbe specimens 



I got are said to have been collectedinFebruary and March, 

 ånd these bear zoospores. A few tbat have been tåken in 

 November are sterile. 



Distfihution: Only found at Berlevaag, probably rather 

 scarce. 



I 



i' 



Laminaria hyperborea (Gunn.) Fosl, 



1* - 



Lam. Norw. p. 42; Fucua hyperboreus Gutiu, Fl. Korv. 1, p. 34, 



f. typica Fosl. 



Bidr. p. 15. 

 Beser, Laminaria Cloustoni Le Jol. Exam. p. 56. 



Hafgygia 



» 



Aresch. Obs. Pliyc. 4, p. 1. 



Laminaria hyperborea Fosl. Lam. Norw. p. 43. 



Fig. 



yf 



» 



» 



)) 



» 



t. 1, flg. 1—8. 



digitata Harv. Phyc. Brit. t. 223, fig. 1. 



f. CQinpressa Fosl. 



Lam. Norw. p. 42. 

 Beser. Laminaria digitata f. longifolia Fosl. Bidr. p. 19. 



Fig. 



» 





hyperborea i compressa Fosl, Lam* Norw- p. 42. 



» 



)> 



ff 



n 



t. 1, fig. 9. 



