204 



OLAF GALL0E 



considerably less frequency-degree and physiognomical dominance. 

 Lichens were found in all the samples (F % 100), but nevertheless 

 played physiognomically a less considerable part than in the level 

 Dryas-grsLSS-Empetrum-healh. They all occurred on the sides 

 of the knolls, while the horizontal surfaces of the knolls were 

 covered by phanerogams. 



The following species occurred : 



o 



' 



ous 

 s 



eo 

 ns 



|l 1 1 F <Vo 



-- U O r "^ 



Alectoria ochroleuca 



Cladonia rangiferina 

 sp. . 



Thamnolia ve 



Cetraria aculeata 

 islandica 



nivalis 



Fahlunensis 



Peltigera rufescens . . 

 lepidophora 



Solorina saccata 



Caloplaca vitellina... 



Lecanora tartarea . 



+ 

 + 

 + 



+ 



~ C3 C 

 rrt *J C 



C '- 

 3 4) 



M S 



U ^ 0) 



o _^. 



^^l 



^ CJ 



+ 

 + 



U 



<u 



+ 

 + 

 + 

 + 



+ 



Alectoria ochroleuca and Lecanora tartarea constituted the most 

 conspicuous features of the landscape, while reindeer moss, which 

 is so common in Danish heaths, was of very little importance there. 



On a knolly heath, in the district around Asbyrgi, sitting on 

 the knolls themselves, I also noted down the following species: 



Cladonia fimbriata fruticose lichen sterile). 



cariosa ( fertile). 



pilyrea ( sterile). 

 Leptogium lacerum (foliaceous lichen; sterile). 



Peltigera venosa ( ; fertile). 



Bacidia llavo-virescens (crustaceous lichen; sterile). 



Psoroma hypnorum ( ; fertile). 



Lecidea assimilata ( ; fertile). 



