19+ 



Explanation of the Plates. 



The figures are reduced to about one half the diameter, pl. 15 — 20, however, 

 a little less, and the others partly a little more, especially pl. 2, partly a little less., 

 especially pl. 8, except on pl. 22, where the figures. 8 and 1 1 are magnified about 

 five times and the other ones of natural size. 



Pl. 1. 



L. glaciale f. torosa. 



Fig. 1 — 3. Habit-figure of two smaller specimens from Kvalsund! 

 and a larger from Kistrand in West-Finrnarken. 



Pl. 2. 



L. breviaxe et L. glaciale. 



Fig. 1. Habit-figure of an older specimen of L. breviaxe. 



A specimen of the same species anastomosed with a form 

 of L. glaciale, the latter most nearly connected with. 

 the typical form. 



o 



PL 3. 



L. fruticulosum f. tgpica. 



Fig. 1 — 6. Older and younger specimens of the plant fromTromso 

 and Beian. In fig. 6 some of the branches are de- 

 nudated and afterwards partly grown out into disc- 

 like expansions, or new branches in development. 



PL 4. 



L. fruticulosum f. typica. 



Fig. 1 — 2. Old specimens with most of the upper branches de- 

 nudated, the rest afterwards partly anastomosing,. 



