490 A. HESSELBO 



173. Mnium stellare Reich. 

 Astrophylluin stellare Lindb. 



E. Iceland: Berufjordur!; Hof!. N. Iceland: Akureyri!, fr.; Tvera 

 in Oxnadalur!. W. Iceland: Waterfall in Brynjudalur (Grl.)!. S. Iceland: 

 Holt!; Vestmannaey !. 



This species grows on damp soil, in rock-clefts, and on tuff, and 

 as a rule sparingly. Near Akureyri it was found mixed with M. spindsiim 

 on a damp slope, and in fruit which was ripe on July 20th, but the 

 capsules had not then thrown off their lids. Near Berufjordur it grew 

 in the fissures in the basalt, mixed with Pohlia cruda, Distichium mon- 

 tamun and Plagiothecium pulchellnm. In Heljusdalur on Vestmannaey it 

 covered the vertical faces of large, tnmbled-down blocks of tuff rock 

 in company with M. serratnm and M. orthorrhynchum. 



174. Mnium cinclidioides (Blytt) Hiiben. 

 Astrophyllum cinclidioides (Blytt) Lindb. 



Very common over the whole of Iceland. 



The most common species of Mnium. It is hardly absent from 

 any bog, where it often forms the bulk of the vegetation, and it is also 

 found everywhere in moss bogs and along the banks of streams. It is 

 common even at a height of above 400 metres above sea-level, and 

 occurs, for instance near Seydisfjordur and Akureyri, in bogs at an 

 altitude of about 500 metres. ^ plants are common, <$ plants and fruit 

 have not been found in Iceland. 



175. Mnium punctatum (L.) Hedw. 



Astrophyllum punctatum (L.) Lindb. 



Very common all over Iceland. 



Grows ever} r where in damp localities, in marshes, where it often 

 forms the bulk of the vegetation, in moss bogs, along the banks of 

 streams, on wet rocks, by waterfalls, etc. It is most frequent in the 

 lowlands up to 300400 metres, but very often it ascends considerably 

 higher, for instance in Svinaskard to about 500 metres above sea-level, 

 and in Berufjardarskard to about 550 metres. 



$ plants are common; the fruit, which is frequently found, was 

 overripe in the middle of June, and the capsules had thrown off their 

 lids (E. Iceland). 



176. Mnium subglobosum Br. eur. 



Astrophyllum pseiidopiinctatum (B. S.) Lindb. 



E. Iceland: Hornafjordur !, sterile. N. Iceland: Hof near Eyjafjordur 

 (O.'D.)!, fr. ; Stadr near Hrutafjordur!, fr. ; Modruvellir (St.); Myvaln 

 (Grl.)!, sterile. W. Iceland: Reykjavik!. The other habitats recorded 

 by Gronlund belong to ("Aiiclidiiim stygium. 



