590 



A. HESSELBO 



The Bryophyte carpet of the heath was composed of Hijloco- 

 mium parietinum, H. prolifernm , Hypnum uncinalnm, Rhacomitrinm 

 hypnoides, Dicramim scoparium, D. fuscescens, D.molle, Ptilidinm 

 ciliare, Lophozia Floerckei, L. lycopodioides, L. ventricosa, Cephalozia 

 hicnspidata, C. pleniceps and scattered cushions of Sphagnum Gir- 



Fig. 2(5. Knolly moor of Be tula liana intermixed with SalLr lanata and Sali.r phylicifolid. 

 Ground vegetation: Einpetnnn. Arctostaphylos nixt ursi. Anthoxanthum odoratuin and 



I'ohjyomim uivipanini. 



gensohnii. The Dicranum spp. especially D. scoparium often formed 

 continuous carpets, which appears to correspond wilh the "Dicra- 

 num heaths" described by C.Jensen, 1910, p. 2(52. 



Knolly Betula nan a Heath near Ljosavaln (Fig. 26). In 

 addition to Betula nana, which formed the bulk of the vegetation, 

 there occurred scattered shrubs of SalLr phylicifolia, S. glaiica and 

 numerous grasses and flowering plants. Mosses and liverworts 

 grew abundantly on the knolls and on the ground between them. 

 The following species were observed: Hijpmim uncinatum, Rhaco- 

 mitrium canescens, R. hypnoides (all in abundance), Hylocomium pro- 

 liferum, H. riigosiim } H.sqnarrosnm, Camptothecium nitens, Heterocla- 

 (Unin squarrosulum, Brachytheciiim erythrorrhizon, Polytrichum jnni- 

 perinum, Tim mid austriaca, Conostomum boreale, Pohlia cruda, B<ir- 

 Iramm ityphylla, Tortellci tortnosa, Dicrannm conyeslnm, Ditrichum 



