THE BRYOPHYTA OF ICELAND 405 



tufts of other Bryophyta sucli as Sphagnum nibclliim. Scapania irrigiia, 

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

 protruded slightlj' above hot water of a temperature of about 50^; 

 there it was growing intermixed in a tuft of Enthostodon ericelonim, 

 Scapania irrigaa and Anthoceros punclatns. 



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

 mens of it are to be found in the collections. 



12. Aneura latifrons Lindb. 

 Riccardia latifrons (Lindb.) 



N. Iceland: several piaces near Eyjafjordur (O. D.!; Akureyri:; 

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

 fjordur!. 



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

 other Bryophyta such as Dicranella crispa, Lophozia Kiinzeana, Sphagnam 

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

 brijum pgriforme on damp gravelly ground. 



Fam. METZGERIEÆ. 

 13. Metzgeria furcata (L.) Lindb. 



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

 rock-faces, usually associated wilh Radula 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 Iowland-plant. In Iceland it has not 

 been found at a higher altitude than about 300 metres. 



Fam. HAPLOLÆNEÆ. 



14. Pellia Neesiana (Gottsche) Limpr. 



Marsilia Neesiana 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, clongated form among Philonotis, Mniuni cinclidioides, 

 Acrocladium cnspidatum, Marchantia, etc, more rarely it grows in un- 

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

 rarely and also ralher sparingly. 



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

 300—400 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 



