o42 A. HESSELBO 



319. Scorpidium scorpioides {L.) Limpr. 



Amblyslegiam scorpioides Lindb. 



Very common. 



It usually grows in Ihe wettest parts of the bogs, often in the 

 water itself, in association with Ilijpnnni gigantciim and H. exanmihilam. 

 In the greater part of tlie country it is niet with everywhere in such 

 localities; only in SW. Iceland (Fljolshlid and Ej'jafjall) does it appear 

 to be less frequent. It appears only by exception to ascend higher than 

 about 300 metres, near Seydisfjordur it was collecled at an aUitude of 

 400 metres. Only sterile specimens have bcen found. 



320. Hylocomium proliferum (L.) Liiidb. 

 Hylocomium splendens iHedw.) Br. eur. 



Ver}' common. 



This species is found especially on a dry substratum, for instance 

 on slopes, amongst grass, in heath-soil or as the most abundant consti- 

 tuent of the moss-covering on stones and in coppices. It occurs how- 

 ever also on damper ground, intcrmixed in tufts of Sphagnum, Sphæ- 

 rocephaliis paliislris, Rhacomitriiim hypnoides, etc, in bogs. Hylocomium 

 proliferum is of almost equal frequency at all attitudes. Near Akureyri 

 it was coUected at an attitude of 990 metres. Only sterile specimens 

 have been found. 



321. Hylocomium pyrenaicum (Spruce) Lindb. 

 Hylocomium Oakesii (Sull.) Schimp. 

 S. Iceland: Krisuvik (Stp.)! 



322. Hylocomium parietinum (L.) Lindb. 

 Hylocomium Schrcberi (Willd.) De Not. 



E. Iceland: BerufjordurI; Hornafjordurl. S. Iceland: Common every- 

 where!. Vestmannaey I. W. Iceland: Esja (Grl.;!); Stykkisholmur 1; Bor- 

 garfjordur!. NW. Iceland: Common!. 



Widely distributed in SE., S. and W. Iceland and on the peninsu- 

 las of NW. Iceland. In E. Iceland it has not been found norlh of 

 Bcrufjordur, and it appears to be absent from the whole of N. Iceland. 

 It usually grows on rather dry ground , for instance in birch coppices, 

 where it almost everywliere forms an essential part of the vegetation, 

 and on moss-grown slopes and in the Rhacomitrium-heaih, but it occurs 

 also on damper ground, especially on knoils in bogs. It rarcly ascends 

 higher than the birch. In NW. Iceland it was collected up to about 

 300 metres above sea-level, and in Esja it grew among Rhacomilrium 



