THE BRYOPHYTA OF ICELAND 403 



FAM. MARCHANTIACE^:. 

 4. Sauteria alpina Xees. 



X. Iceland: Graenuhnukr in Brattafjallgardi between Modruvellir and 

 Bru (St.). 



5. Reboulia hemisphaerica (L.) Raddi. 



SW. Iceland: Hafnarfjordur H. J.)!. S. Iceland: Drangshlid H. J. 

 Holt!; near Skogafos!: Seljaland!. 



This plant was found only in tbe 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 tuff cliffs; in this situation it usually 

 grew in company with Preissia commutata, Feyatella, Marchantia, Anoec- 

 tangium compaction. Distichium montanum, etc. It was found every- 

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



6. Fimbriaria pilosa (Wahlb.) Taylor. 



N. Iceland: Hof O. D.) ! ; Boggverstadadalur (O. D. :. XW. Iceland: 

 Baeir on Snaefellsstrand!. 



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

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

 It was everywhere collected in fruit which near Ba?ir had just ripened 

 on June 6. 1912. 



7. Fegatella conica Cord a. 

 Hcpatica conica Lindb. 



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

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



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

 common in all the parts which were investigated. It grew there every- 

 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, sometimes on the damp tuff rocks them- 

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

 cimim, Eurynchium Swcirl:ii, etc. Sterile specimens only have been found. 



8. Preissia commutata (L.) Nees. 

 Chomocarpon quadra tus Scop.) Lindb. 



N. Iceland: Hof. fr. (O. D. ':!; Modruvellir O.I). !; Hrossaberg on 

 warm clayey flats, fr. (St.)!; Stora Gja near Myvatn !. XW. Iceland: 

 Stadr on Snaefellsstrand, fr. (Stp. !. \V. Iceland: common near the hot 

 springs in Reykholtdalur!; Hafnarfjordur!. S. Iceland: Thingvellir Grl.:! 



