THE BRYOPHYTA OF ICELAND 



481 



dalur (C.Hansen)!. NW. Iceland : Lundur!, fr. S. Iceland: Vestmannaey! ; 

 fr. ; Skalholt!; Austerhlid near Geysir!; Breidabolstadr ! ; Barkarstadr !; 

 Holt!, fr.: Drångshlid !. 



Common in the southern part of the country and on Vestmannaey; 

 rarer in the other parts of the country. In S. Iceland it grew especially 



Kig. 6. tSryttm Grænlundii. a, Capsules (X20); b. leaves (X-0): c, perichætial leaves (X20); il, leaf 

 margin at base, and e, from the middle of the leaf (X 1201. 



abundantly everywhere in clefts of tuff rocks, and on Vestmannaey it 

 was also frequent on the faces of damp tuff rocks. It was found in 

 several localities in fruit, which was quite green even in the beginning 

 of July. Near Lundur it was found on damp ground, associated with 

 other Bryiim spp. and Dichodonthim, and had ripe fruit at the end of 

 July. In several of the fruiting specimens from this locality a few 

 hermaphrodite flowers were found besides the numerous $ flowers. ^ 

 piants occur everywhere, but c? piants have not been found. 



In the leaf-angles of all the piants investigated hair-formations were 

 found, consisting of readily falling, 8—10 celled. brown, papillose hairs, 

 which very easily break into pieccs of 2—4 cells. The leaves vary from 

 shortly pointed. with nerve vanishing just below the apex, and shortly 



