THE BRYOPHYTA OF ICELAND 583 



gro und and only occurasanexceptioninotherlocalities, 



Aneura nuiltifida (L.) Dum. Reykholtdalur. 



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



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

 Krisuvik. 



Sphagnum papillosnin Lindb. Very common. 



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



vS. inundatiini Russ. Laugaråshverir; Sydri Reykjahver. 



Hypniim iniponens Hedw. Common near most hot springs. 



Haplozia sphærocarpa (Hook.) Dum. and Oligotrichiim hercijnicum. 

 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. 



Oligotrichiim hercgnicum is common near most alkaline springs, 

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

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

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



3. Species w hi ch are also common in other localities. 



Aneura pingiiis Dum. Common. 



Pellia Neesiana (Gottsche) Limpr. Common. 



Blasia piisilla L. Near man}' springs. 



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



Aliciilaria scalaris (Schrad.) Corda. Very common everj'where. 

 — geoscypha de Not. Reykirdalur. 



Cephalozin biciispidata (L.) Dum. Reykirdalur. 



Scapania irrigiia (Nees) Dum. Frequent. 



Sphagnum subnitens Russ. et Warnst. Laugaråshverir; Reyk- 

 holtdalur. 



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



S. riihelliim Wils. Reykholtdalur. 



S. Warnstorffii Russ. Reykholtdalur. 



S. Girgensohnii Russ. Laugarvatnshverir. 



Dicranella squarrosa (Schrad.) Sch. Rej'kholtdalur. 



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



Blindia acuia (Huds.) Rr. eur. Reykholtdalur. 



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



Trichostomum littorale Mitten. Reykjanes. 



Catoscopium nigritum (Hedw.) firid. Frequent. 



Mnium undulatum (L.) Weiss. Reykholtdalur. 



Mniuin hornum L. Common near alkaline springs. 



