530 A. HESSELBO 



282. Hypnum Sommerfeltii Myrin. 



N. Iceland: Stora Brekka near Eyjafjordur (O. D. !. S. Iceland: Fell 

 (Harder. 1908)!, a few stems among Hypinim uiicinatnin, H. stellahim 

 and Dilrichum flexicaiile. 



283. Hypnum chrysophyllum Brid. 

 Amhlystegiiim chrysophijllum (Brid.) Lindb. 



E. Iceland: Berufjordur!. N. Iceland: Near Myvatn ^Grl.)!; Hof near 

 Ej'jafjordur (O. D.!. W. Iceland: Esja, several piaces (Grl.;!). S. Iceland : 

 Geysir, on warm ground!. Vestmannaej^, Heljusdalur !. 



Var. /3 fenellfim Schimp. 



W. Iceland: Esja!. 



On damp gravelly ground and on rocks, rather rare and scanty. 

 Near Geysir it grew plcntifully on warm damp ground over which the 

 tepid water from the basin was flowing. Onlj- sterile specimens have 

 bcen found. 



Hypnum Zemliæ C.Jensen, which was collected by Steenstrup 

 {but no habitat is given) is onlj' a form of Hypnum chrysophyllum. 



284. Hypnum protensum Brid. 

 Amblystegium protensum Lindb. 



E. Iceland: Skrciddalur 1; Seydistjordur!. N. Iceland: Hof (O. D.)!: 

 frequent in Esja!. 



This species is probably widely distributed, but, on account of its 

 great resemblance to the far more commonly occurring H. stellahim. 

 cannot always be kept dislinct from the latter species. It grows in 

 somewhat damp localities, both on stones and on the ground, but only 

 sterile specimens have been found. 



285. Hypnum stellatum Schreb. 



Amblystegium stellatum (Schreb.) Lindb. 



Very common everywhere on a damp substratum, on rocks, on the 

 ground and in bogs, and not rarcly in fruit. It is abundant even at a 



» 



height of 500—600 metres above sea-Ievel. 



'o 



286. Hypnum polygamum (Br. eur.) Wils. 



Amblysteghim polygamum Br. eur. 



Very common on wet, boggy ground. It occurs especially abundantly 

 in the neighbourhood of the coasts, but is also very common in the 

 Valleys further inland, and hardh' ascends higher than about 800 metres. 

 Fruit, which is met with very frequently, ripens at the end of June or 

 in the beginning of July. 



