484 A. HESSELBO 



152. Bryum capillare L. 



E.Iceland: Hamarfjordur!. N. Iceland : Modrufellshraun (^St.) !; Grimsey 

 (O. D.)!. W. Iceland: Hvammur (GrI.)!; Hafnarfjordur!; Videy!, several 

 piaces near Reykjavik!. S. Iceland: Breidabolstadr !; Holt!. Vestmannaeyi. 



This species occiirs, as a rule only sparingly, on humus-covered 

 rocks and in lava-clefts. Only on Vestmannaey was it common, occur- 

 ring especially on the tumbled-down blocks at the foot of cliffs inhabited 

 by sea-fowl. 



The nerve usually vanishes just below the hair-shaped leaf-])oint. 

 In the plant from Modrufellshraun and in the majoritj' of the specimens 

 from Vestmannaey the nerve varied considerably in length, sometimes 

 reaching scarcely beyond the middle of the Icaf, sometimes almost to 

 the apex. The piants from the former habitat, in addition, bore clusters 

 of easily falling brown threads in the uppermost leaf-angles, quite similar 

 in appearance to those in Bryum æneiim. 



153. Bryum cæspiticium L. 



Iceland (Krabbe, 1863)!. E. Iceland: Seydisfjordur!; Vallanes (H. J.;!); 

 Hallormstadaskogur !. N. Iceland: Hålsskogur!; Stadartunga (O. D.)!; 

 Vidvik (P. Sofoniasson)!. S. Iceland: Almannagjå!. 



Gronlund records this species from Re^dijavik and Laugardalur, 

 but there are no specimens of it from these localities in the collections. 



Grows in dry sandy soil, especially in birch coppices, and appears 

 to be rather frequent in North and East Iceland. It occurred abundantly 

 in several localities in Hålsskogur. Near Vallanes it occurred sometimes 

 on dry sandy soil, sometimes on the dikes and peat-walls of the farm. 

 In Hålsskogur the fruit was ripe on July 19th, but some of the lids 

 still persisted. 



154. Bryum comense Schimp. 



N. Iceland: Reistarårgil (O. D.)! ?; Hof (St.)!. 



Both the above localities are situated on the east side of Eyjafjordur. 



155. Bryum elegans N. v. Es. 



E.Iceland: Djupivogur! (^ : Berufjordur (Grl.)!. N. Iceland: Reykjahlid! 

 c^. NW. Iceland: Isaljardarheidi, at an attitude of 450 metres! (^ and $• 

 \V. Iceland: Hafnarfjordur!; Svinahraunl. Vestmannaey!. 



Not common, but sometimes abundant in humus-filled rock and 

 lava clefts, etc. Near Reykjahlid it was common in the lava-field. 



Varies considerablj' in leaf-form, the length of the nerve, etc. The 

 plant from Isafjordur has distinctly bordered, erect spreading, and 

 narrower leaves, and belongs most nearly to var. carinthiaca (Br. eur.) 

 Breidl. In lava-clefts there usually occurs a low, compact form with 



