THE BRYOPHYTA OF ICELAND 455 



65. Barbula icmadophila Schimp. 



SE. Iceland : Hornafjprdur!, in several places in small quantities. 

 N. Iceland: Skagafjordur (Grl.)!; Hofsfjall near Eyjafjordur (O. D.)!. 

 W. Iceland: Esja, at an altitude of 400 metres!. 



This species has been collected everywhere only in small quantities, 

 in cushions 1 2 cm. deep, on humus-covered rocks. 



((). Desmatodon latifolius (Hedw.) Br. cur. 

 Tortilla latifolia (Hedw.) Lindb. 



E. Iceland: Djupivogur!, common near the sea; Vallanes!; Hamar- 

 fjordur!; Berufjordur!. N. Iceland: Husavik! at an altitude of about 

 400 metres; Reykjahlid!; Grimsey (O. D.)!; Stadr near Hrutafjordur !. 

 NW. Iceland: Isafjordur!; Grunnavik!; Hesteyri!; Arngerdaeyri!; W. Ice- 

 land : Stvkkisholmur!. 



V 



Var. inuticus Brid. 



Grimsey (O. D.)!; Reykjahlid!; Isafjordur!, 450 metres above sea- 

 level. Found in all the localities together with the type. 



In NW. Iceland D. latifolius is one of the most frequently occur- 

 ring species, and the same appears to be the case in E. Iceland. It 

 occurs especially near the sea on sandy soil or, also, on humus-covered 

 rocks, and often abundantly. Near Vallanes it grew in masses on peat 

 w r alls and on dikes around the farm, associated with Encalypta rhab- 

 docarpa, Tortilla subulata, Ceratodon purpnreiis , Brynm argenteiim, Bar- 

 tramia ityphylla, etc. 



In N. Iceland this species occurs more sporadically. Near Husavik 

 only a single little tuft was found on the top of Husavikurfjall; near 

 Reykjahlid it was common in lava-fields, in places covered by a thin 

 humus-layer, associated with Ceratodon purpnreiis, Tortilla ruralis, T. su- 

 bulata, etc., and near Stadr it grew on the peat walls of the farm ex- 

 actly as it grew near Vallanes. From SW. and S. Iceland this species 

 appears to be quite absent, and in W. Iceland it was only found near 

 Stykkisholmur, where it was found abundantly on earth and rocks along 



the shore. 



It is only by exception that Desmatodon latifolius has been found 

 at higher altitudes. Near Isafjordur it occurred here and there on the 

 rocky flat up to a height of about 500 metres, for instance on a stony 

 slope 450 metres above sea-level, associated with Bnjnm eleuans, Bar- 

 tramia ityphylla, Pohlia commutata, Scapania cnrta and Encalypta rhab- 

 docarpa. The fruit, which was present everywhere in abundance, ri- 

 pens at the end of June. 



67. Desmatodon cernuus (Hubn.) Br. eur. 

 Tortula cerium (HiibnO Lindb. 



N. Iceland: Hof (O. D.)!; Hjalteyri (O. D.)!. 



On the plant from Hjalteyri the fruit had just ripened on Sep- 

 tember 5, 1897. 



