THE BRYOPHYTA OF ICELAND 583 



ground and only occur as an exception in other localities. 



Anenra mnltifida (L.) Duni. Reykholtdalur. 



Haplozia crennlata (Sm.) Dum. Near all hot springs. 



Gymnocolea inflata (Huds.) Dum. Reykholtdalur; Reykirdalur; 

 Krisuvik. 



Sphagnum papillosnm Lindb. Very common. 



S. angnstifoliiim C. Jens. Common near alkaline springs. 



S. inundatnm Russ. Laugarashverir; Sydri Reykjahver. 



Hypnum imponens Hedw. Common near most hot springs. 



Haplozia sphcerocarpa (Hook.) Dum. and Oligotrichum hercynicum. 

 These two species have a most peculiar distribution. 



Haplozia has been found near several hot springs in SW. Ice- 

 land and also on mountain heights near Isafjordur. 



Oligotrichum hercynicum is common near most alkaline springs, 

 and also near a few containing sulphuretted hydrogen. It is, 

 moreover, common on rocky flats at an altitude of 400 500 metres, 

 and also in NW. Iceland ; but is otherwise very rare. 



3. Species which are also co mm on in other localities. 



Aneura pinguis Dum. Common. 



Pellia Neesiana (Gottsche) Limpr. Common. 



Blasia pusilla L. Near many springs. 



Preissia commutata (L.) N. v. Es. Reykholtdalur; Reykjanes. 



Alicularia scalaris (Schrad.) Corda. Very common everywhere. 

 geoscypha de Not. Reykirdalur. 



Cephalozin bicuspidata (L.) Dum. Reykirdalur. 



Scapania irrigua-(Nees) Dum. Frequent. 



Sphagnum subnitens Russ. et Warnst. Laugarashverir; Reyk- 

 holtdalur. 



S. teres (Schimp.) Angstr. Very common. 



S. rubellum Wils. Reykholtdalur. 



S. Warnstor/fii Russ. Reykholtdalur. 



S. Girgensohnii Russ. Laugarvatnshverir. 



Dicranella squarrosa (Schrad.) Sch. Reykholtdalur. 



Fissidens osmundoides (Sw.) Hedw. Frequent near alkaline springs. 



Blindia acula (Huds.) Br. eur. Reykholtdalur. 



Ditrichum homomallum (Hedw.) Hampe. Geysir; Reykirdalur. 



Trichostomum littorale Mitten. Reykjanes. 



Catoscopium nigritum (Hedw.) Brid. Frequent. 



Mnium undulatum (L.) Weiss. Reykholtdalur. 



Mnium hornum L. Common near alkaline springs. 



