THE BRYOPHYTA OF ICELAND 



479 



141. Bryum calophyllum R. Brown. 



E. Iceland: Vallanes!, on wet boggy ground. The capsules were 

 quite green even on June 27th. 



Fig. 3. lirijum isliindicntn. a. Leaf margin (X 1-0); b and c, pericha-tial leaves: d and e. leaves. 



142. Bryum uliginosum (Bruch) Br. eur. 



N.Iceland: Husavik!; Svinadalur!. W. Iceland: Haukadalsheidi! 5 at 

 an altitude of about 300 metres. 



In all the above localities it grew abundantly on dam]), sandy ground. 



On Haukadalsheidi the fruit was 

 ripe on Aug. 1st, in the other localities it 

 was unripe in the middle of July. 



Besides <$ and ^ flowers, a few 

 hermaphrodite flowers also occur fre- 

 quently. The papillae of the peristome 

 are in the lowermost transverse seg- 

 ments often distinctly arranged in 

 transverse rows, and sometimes there 

 are also distinct transverse bars as in 

 B. piirpnrascens. As is the case in 

 the latter species, the ripe capsule 

 contains a colouring matter which on 

 being treated with ammonia assumes 

 a red colour in the air. 



143. Bryum Groenlundii n. sp. 



Csespites laxiusculi, ca. 1.2 cm. 

 alti, superne virides, subnitentes; sur- 

 culi innovationes tenues. 



! 



^ \VX^ 



-. 



ijj. 4. Hryum islandicum. Peristome 

 (X 120; phot.). 



