THE BRYOPHYTA OF ICELAND 403 



Fam. marchantiaceæ. 



4. Sauteria alpina Nees. 



N. Iccland: Grænuhniikr in Bratlatjallgardi between Modruvellir and 



Bru (St.). 



5. Reboulia hemisphærica (L.) Raddi. 



SW. Iceland: Hafnarfjordur H.J.)!. S. Iccland: Drangshlid K. J.;!); 

 Holt!; near Skogafosl; Scljaland!. 



This plant was found only in the southern part of the country, 

 but it appears to occur there rather frequently. Near Hafnarfjordur it 

 was found in a lava cave; in S. Iceland it was collected everywhere 

 from the somewhat damp faces. of tuff rocks, especially from the base 

 of the sides of illuminated caves in tufTcliffs; in this situation it usually 

 grew in conipan)- with Preissia commiitata, Fegatella, Marchantia, Anoec- 

 tamjiam conipitcliim . Distichiam inontdiiiim, etc. It was found every- 

 where in fruit which was almost ripc at the end of July. 



6. Fimbriaria pilosa (Wahlb.) Taylor. 



N. Iccland: Hof O. D.) ! ; Boggverstadadalur (O. D.) !. N\V. Iceland: 

 Bæir on Snæfellsstrand!. 



Near Bæir it grew abundantly on a stony slope facing south and 

 stretching down towards the sea, upon ralher dry, humus-covered rocks. 

 It was everywhere collected in fruit which near Bæir had just ripened 

 on June 6, ^19 12. 



7. Fegatella conica Corda. 

 Hepatica conica Lindb. 



S. Iceland: Drangshlid (H.J.!; Merkjafoss (F. !; Breidabolstadr!; 

 Barkastadr!; Seljaland!; Holt!; Drangshlid!; Skogafos!. 



This plant was not found exccpt in S. Iceland, but there it was 

 common in all the parts which were investigated. It grew there ever}'- 

 where on faces of tuff rocks, especially on those of caves and clefts, 

 and more particularly on the faces with a southern exposure where it 

 may occur very abundantly, sonietimes on the damp tuff rocks them- 

 selves and sometimes creeping over mosses, for instance Hijpnnm fili- 

 ciniim. Hiirynchiiim Sivaiizii, etc. Sterile specimens only have been found. 



8. Preissia commutata (L.) Nees. 



Chomocarpon qiiadratus Scop.) Lindb. 



N. Iceland: Hof. fr. (O. D.)!; Modruvellir (O. D.^i; Hrossaberg on 

 warm clayey flåts, fr. (St.)!; Stora Gjå near Myvatn!. NW. Iceland: 

 Stadr on Snæfellsstrand, fr. (Stp.)!. W. Iceland: common near the hot 

 springs in Rcykholtdalur!; Hafnarfjordur!. S. Iceland: Thingvellir Grl.;!' 



