LICHENOLOGY OF ICELAND 



213 



; hypothallus-wanderer [usually]). 



i / 



? / 



5 ) 



; podetia-wanderer). 



foliaceous; erect. 



procumbent). 



erect). 



procumbent). 



The following species have been found on the heaths of Ice- 

 land: 



Alectoria ochroleuca (fruticose; podetia-wanderer). 



nigricans 



Thamnolia vermicularis 

 Cladonia rangiferina 

 uncialis 

 gracilis 

 turgida 

 fimbriata 

 cariosa 

 pityrea 

 coccifera 

 Stereocaulon paschale 



denudatum 



Sphaerophorus fragilis 

 Cetraria aculeata 

 islandica 

 nivalis 

 Fahlunensis 

 hiascens 



Peltigera aphtosa 

 venosa 

 rufescens 

 lepidophora 



Dermatocarpon hepaticum ( 

 Solorina saccata 

 Leptogium lacerum 

 Lecanora tartarea 

 Psoroma hypnorum 

 Pertusaria xanthostoma 



oculata 

 Caloplaca pj r racea 



Jungermanniae 

 vitellina 



Pannaria brunnea 

 Rinodina mniarsea v. cinnamomea 

 Bacidia flavovirescens 



umbrina 



Baeomyces byssoides 

 Buellia scabrosa 



parasema v. muscorum 

 Lecidea vernalis 

 helvola 



elaeochroma v. muscorum 

 assimilata 

 Lepraria 



To these must probably be added almost all the other species 

 which have been found, some by me on the ground in other plant- 



(crustaceous). 



