THE BRYOPHYTA Ol ICELAND 405 



tufts of other Bryophyta such as Sphagnum rubcllum, Scapania irrigna, 

 and Pcllia Xcesiana. In one place it was growing on a stone which 

 protruded slightly above hot water of a temperature of about 50; 

 there it was growing intermixed in a tuft of Knthostodon erwetornm, 

 Scapania irrigna and Anthoceros punclatus. 



This species is recorded by Morch from Iceland, but no speci- 

 mens of it are to be found in the collections. 



12. Aneura latifrons Lindb. 

 Riccurdia latifrons Lindb. 



N. Iceland: several places near Eyjafjordur (O. I). !; Akureyri!; 

 Husavik!. NW. Iceland: Laugarland!. SW. Iceland: Reykjavik!: Kolla- 

 fjordur!. 



This plant usually grows on peaty soil intermixed in the tufts of 

 other Bryophyta such as Dicranella crispa, Lophozia Kunzeana, Sphagnum 

 spp. and Aneura pingvis. Near Husavik it was growing among Lepto- 

 bryum pyri forme on damp gravelly ground. 



FAM. METZGERIE^E. I 



13. Metzgeria furcata (L.) Lindb. 



Commonly distributed all over Iceland in dry rock-clefts and on 

 rock-faces, usually associated with Radala complanata. In S. Iceland, 

 where it is very common on rock-sides in clefts of tuff rocks, it is 

 sometimes found also in rather damp localities. Only sterile specimens 

 have been found. 



Metzgeria furcata is a typical lowland-plant. In Iceland it has not 

 been found at a higher altitude than about 300 metres. 



FAM. HAPLOL.ENE.E. 



14. Pellia Neesiana (Gottsche) Limpr. 



Marsilia Xcesiana Lindb. 



Very common on wet ground especially along river-banks, in moss 

 bogs and on inundated ground; somewhat more rare in marshes. It 

 grows almost always intermixed in the tufts of other Bryophyta, and 

 usually as an erect, elongated form among Philonotis, Mniuni cinclidioid.es, 

 Acrocladium cuspidatum, Marchantia, etc., more rarely it grows in un- 

 mixed tufts on damp ground. Fruit appears to be produced rather 

 rarely and also rather sparingly. 



This species has its main distribution in the lowlands up to about 

 300400 metres, and it is only by exception that it has been found 

 above this level. 



Pellia epiphylla L Lindb. is enumerated in the majority of the 



