414 A. HESSELBO 



boggy ground it is found interwoven with Hypnacece in their tufts, but 

 rarely in those of Cinclidium, Lophozia Kunzeana or other bog-mosses. 

 The majority of the specimens investigated are small and delicate, 

 and must partly be referred to forma heterophylla Bryhn et Kaalaas, and 

 partly to forms transitional between this and the type. Only sterile 

 plants have been found. 



41. Lophozia Kunzeana (Hub.) Evans. 



Very common in bogs, on damp rocks, damp gravelly ground, etc. 



It is most widely distributed in bogs where it grows woven into, 

 or creeping over tufts of other Bryophyta, especially Sphagnum. Near 

 Akureyri, for instance, it commonly occurs in bogs up to a height of 

 about 600 metres. In S. Iceland it is rather rare in the bogs of the 

 lowlands, but is met with abundantly at an altitude of 200400 metres. 



42. Lophozia barbata (Schmid.) Dum. 



E. Iceland: Arbser, among Grimmia canescens (H. J.)!. W. Iceland: 

 Bjarnarhofn (H. J.)!; Berserkjahraun (H. J.)!; Reynivellir (Grl.)!; Nordre- 

 dalur in the district of Borgarfjordur!; Alafoss!. 



In addition to the above-mentioned localities Gronlund and Helgi 

 Jonsson record this species from several other localities, but some of 

 the specimens which have been investigated proved to be wrongly deter- 

 mined (being, as a rule, forms of L. lycopodioides), so only those loca- 

 lities are enumerated here from which authentic specimens are known. 



L. barbata appears to be rather rare. It has as a rule been col- 

 lected, intermixed rather sparingly in tufts of other Bryophyta especially 

 Grimmia and Hylocomium spp. and belongs to the Grzmmza-heaths or 

 to the mossy bottoms of birch coppices; thus in Nordredal it frequently 

 occurred in birch coppices among Hylocomium spp., Dicranum scoparinm, 

 Ptilidium ciliare, etc. 



Note. Lophozia gracilis (Schl.) Stephani is recorded from several 

 localities, but all the specimens which have been investigated have been 

 wrongly determined, being mostly Lophozia lycopodioides var. parvifolia. 



43. Lophozia ventricosa Dicks.) Dum. 



Common on more or less damp ground, both boggy and gravelly 

 ground, and on rocks on mountain heights. 



This species is very common especially in NW. Iceland, and occurs 

 there on a heathy bottom woven into tufts of Dicranum ; along the 

 banks of streams associated with Harpanthus , Lophozia quinqiiedentata 

 and Cephalozia bicuspidatct] and in bogs among Spagnum. It appears, 

 on the whole, to be more frequent the higher it ascends; undoubtedly 

 its main distribution is from a height of about 300400 metres upwards. 



Var. porphyroleuca (Nees) Hartm. is likewise commonly distributed 

 and occurs, for instance, frequently interwoven with Conostomum in its 

 compact tufts, and also in tufts of Dicranum and Sphagnum on damp ground. 



