THE BRYOPHYTA OF ICELAND 471 



123. Pohlia nutans (L.) Lindb. 



E. Iceland: Seydisfjordur!; Vallancs!. N. Iceland: M\vatn (Grl.)!; 

 Halsskogur!; Heljardalsheidi (Grl.)!. NW. Iceland: DVrafjordur!; Isa- 

 fjordur!; Sugandafjordur!; Jokulsfjordur!. W. Iceland: Breidabolstadr!; 

 Reykjavik (Grl.). S. Iceland: Frequent near Thingvellir (Grl.;!); Draupahlid 

 (Wiinsted)!. 



P. nutans was first found in Iceland by Steenstrup, who did not, 

 however, give the habitat. It is also recorded by Morch, but all the 

 specimens collected by him have been wrongly determined. It usually 

 grows on a rather dry substratum. In the majority of the localities it 

 occurred on the ground in birch coppices, as for instance in NW. Iceland, 

 where it is common everywhere in the coppices at the head of the 

 tjords. In that part of the country it also grows both frequently and 

 abundantly on peat, and has been collected up to a height of about 

 350 metres above sea-level. 



In the other parts of the country it is rather rare, and was as a 

 rule found in small quantities only. Only around Thingvellir was it 

 rather common in the birch coppices. In NW. Iceland the fruit was ripe 

 about Julv 1st. 



124. Pohlia cucullata (Schwagr.) Bruch. 



Iceland (Morch)!; Holtevad heath (Grl.)! (determined by Zetterstedt 

 as Wcbera Lndiuigii). N. Iceland: Akureyri, at an altitude of about 800 

 metres. NW. Iceland: Isafjordur!, at an altitude of about 350 metres; 

 Dynjandi!; Arngerdareyri!. 



Near Akureyri it was growing in gravelly soil saturated with melting 

 snow, associated with Polytrichum sexangnlare, Dicranum Starckei, Pleuro- 

 cloda albescens, etc. The fruit w 7 as almost ripe on July 23rd. In NW. Ice- 

 land it was common in several places north of Isafjordur on damp ground 

 (peat) at the bottom of the valley. Here the fruit was not quite ripe 

 in the beginning of Julv. 



o o *, 



125. Pohlia Ludwigii (Sprengel) Schimp. 



Pohlia Weigelii (Schimp.) Lindb. 



N. Iceland: Ljosavatnsberg!. 



In the above locality it grew abundantly on damp gravelly soil at 

 an altitude of about 500 metres. Only sterile specimens were found. 



126. Pohlia commutata (Schimp.) Lindb. 



Very common. 



Pohlia commatata is one of the most frequent species, especially in 

 the Alpine region; at elevations from about 300 to 600 metres it is met 



