THE BRYOFHYTA OF ICELAND. 543 



hijpnoides at an altitiide of aboul 450 metres. Only sterile speciniens 

 have been found. 



323. Hylocomium loreum (L.) Br. eur. 



W. Iceland: Esja (Grl.;!), coniinon up lo aboiit 400 metres above 

 sea-lcvel; comruon in the coppices of Ihe district of Borgartjordur!; 

 Berserkjarliraun; Arnarbotn; Budahraun (H. J.)!; Stykkisholmur!; Bryn- 

 jiidalur (Grl.)!; Hafnarfjordur Grl.;!); Svinaliraun !; Kolvidarhol!, up to 

 about 350 metres. XW. Iceland: Sugandafjordur!, uj) to about 2r)0 me- 

 tres; D.vratjordur!, up to about 200 metres. S. Iceland: Widely distri- 

 buted!; Thingvellir !; Laugardalur !. 



Widely distributed in the whole of the southern and south-western 

 part of Iceland as far as Borgartjordur and Snæfellsnes. It also occurs 

 rather plenlifully in some of the fjords of the north-wcst. It grows 

 sometimes in clefts among fallen blocks of rock, sometiines on slopes 

 together with other Hijlocomiiim spp., Dicranum scopariiim , Rhacomi- 

 triiim spp., etc. , or in the birch coppices. It was collected in fruit 

 near Holt in S. Iceland, where a few old, empty capsules were found. 



324. Hylocomium triquetrum (L.) Br. eur. 



Iceland (Koenig). E. Iceland: Frequent from Berufjordur south- 

 wards!. N. Iceland: Asbyrgi!; near Eyjafjårdur (O. D.;! ; Ljosavatn 

 (Grl.;!); common west of Blondudalur!. NW. Iceland: Rather common 

 in all the fjords!. W. Iceland : Rather common everywhere (Grl.;!). Vest- 

 mannaey!. S. Iceland: Common!. 



Commonly distributed from Berufjordur in E. Iceland throughout the 

 whole of S.. S\V. and W. Iceland, and in the majorit}' of the fjords of 

 the north-west. It is rather rare in North Iceland proper, east of 

 Blondudalur, and occurs, as a rule. only scantily in the coppices or in 

 the Betiila nand heath. 



Its growth is similar to the other species of Hijloconiiuni . with 

 which it is almost always found associated, especially in coppices and 

 on moss-grown slopes. It has the same allitudinal distribution as H. 

 loreum and H. parietimim, as it hardly ascends higher than to the upper 

 limit of the birch. In Esja it is common up to 350—400 metres, near 

 Kolvidarhol it was found in company with H. loreum at 350 metres, 

 and in NW. Iceland it everywhere accompanics the birch to its upper 

 limit at about 250 metres. Only sterile speciniens have been found. 



325. Hylocomium squarrosum (L.) Br eur. 



Very common over the whole of Iceland. 



It grows both on a damp substratum, on stony flåts as on boggj' 

 ground, and on a more dry substratum, associated with other Hyloco- 

 mium spp., Hijpnum uncinatum, etc. It is most frequent in the low 

 land, but occurs, however, also at rather considerable attitudes. In 

 Berufjardarskard it was found even at 500—600 metres, near D\ra- 

 fjordur at 330 metres and in S. Iceland in many piaces up to about 



