538 A. HESSELBO 



306. Hypnum palustre Huds. 

 Amblysteginm jxtliistre ^Huds.) Lindb. 



E. Iceland: Seydisfjordurl. N. Iceland: Akureyri (Grl.)!; Vidimyri 

 (Grl.)!; Grimstunga Grl.}!; Ljosavatnl, at an altitude of about 300 metres; 

 Melar (.Grl.):. W. Iceland: Gilsbakki!: Reykholtdalur Grl.;!); Lundur- 

 reykjadalur!; Reykjavik!; common in Esja!; Alafoss!. S. Iceland: Commonl. 



Tilis species is common in S. Iceland Eyjafjall, Fljotshlid, etc. . 

 SW. and W. Iceland, is found here and there in N. Iceland and is rare 

 in E. Iceland. It has not yet bcen fouiid in NW. Iceland. It grows 

 everywhere on rocks and stones in and by rivers, and almost always 

 sets fruit, which ripens duringJuly. It does not appear to ascend higher 

 than about 300 metres above sea-level. 



Of the varieties only var. f) siibsphrericarpon (Schleich.) Br. eur. is 

 of any interest. It occasionally occurs in company with the tjpe on 

 stones in swiftly flowing rivers. 



307. Hypnum arcticum Sommerf. 

 Amblysteginm Smithii (Sw.) Lindb. 



W. Iceland: Hvammur (Grl.)!. NW. Iceland: Bæirl fr. It is, more- 

 over, recorded from Iceland by Morch and from Akureyri (Grl.), but 

 both the piants are wrongly determined. 



Near Bæir it grew on wet rocks by a small waterfall. 



308. Hypnum alpestre Sw. 



Amblysteginm rivalare (Sw. Lindb. 



E. Iceland: Berufjordur!, common; Seydisfjordurl, common up to 

 about 200—300 metres above sea-level; Breiddalskard!, at an attitude of 

 about 400 metres; Vallanes (H. J.;!), common on rocks along the sea; 

 Skriddalur!. N. Iceland: Oxnadalur!, very common in the river. NW. Ice- 

 land: Isafjordurl. frequent up to about 200 metres; Sugandafjordur !: 

 Arngerdareyril. W. Iceland: Lundur!. SW. Iceland: The Laxa [¥.)\\ the 

 Langå (H. J.)!; the Oxarara I. 



Common in E.. N. and NW. Iceland, rarer in W. and SW. Iceland. 

 This species has its main distribution in E. Iceland, where it occurs 

 everx'where in the rivers and ofteii covers the stones along the banks 

 for long distances. Fruit, which occurs rather commonly, ripens in 

 July (Oxnadalur, July 24; Vallanes, hardly ripe on June 28th). 



309. Hypnum alpinum Schimp. 

 Amblysteginm molle jj alpinnm Lindb. 



E. Iceland: Berufjordur!. N. Iceland: Akurej^ri (Grl.;!); Hof near 

 Ej'jafjordur (O. D.)!; Holar (Grl.)! fr. ; Lækjarmot! fr.; common in Oxna- 

 dalur! fr., NW. Iceland: Isafjordur! fr.: Dvrafjordur! fr.; Arngardareyri! 

 fr. ; Dvnjandi! fr. 



Figured in Flora Dan. (tab. 2621, fig. 2 as Hypnnm molle, leg Morch. 



