544 A. HESSELBO 



500—550 metres above sea-level. Only sterile specimens have been 

 found. 



326. Hylocomium rugosum (Ehrh.) De Not. 



Widely distributed on dr}- grass or moss-grown slopes or flåts, 

 usuallj' mixed with other Brj^ophyta sucli as Hylocomium parielinam, H. 

 prolifenim, H, sqiiarrosnm. Rhacomitriiim hypnoides, Dicramim sco])ariiim. 

 PtHidinm ciliarc, etc, rarely unmixed in large mats. It has the same 

 altitudinal distribution as H. triquetrnm, and hardly ascends higher 

 than about 300—400 metres above sea-level. Only sterile specimens 

 have been found. 



