960 



slopc u|) to a lieight of 100 ni. covered with hcather, espccially with 

 Calluna, but also Erica, and some Empctnim. On the terrace above 

 (about 140 m.) the heather is mixed with niuch Scirpus caespitosus. 

 Nardus and Juncus sciuarrosus, as well as Grinimia hypnoides; on the 

 next terrace (about 240 m.) (^alluna has become subordinate, and Erica 

 has almost disappeared. while Nardus and Grimniia have gained ground, 

 and on the 3rd terrace (about 300 m.) the usual transition formation 

 between the Grimmia heath and the grass-moor appears, the heather 

 having disappeared. 



5. The terrain above Næs parsonage, O s te ro. The surface- 

 conditions very similar to those north of Thorshavn (see example 2). 

 Callnna and Erica dominant on the drier piaces, while the depressions 

 are covered with moor-vegetation. 



6. The lowland between Midvaag and Sorvaagsvatn, Vaago. 

 Conditions similar to example 5. The tufts are covered with Calliina, 

 some Erica, Scirpus caespitosus, etc. 



7. Slope at about 200 m. on the western side of the Skaalefjord- 

 vall.ey, Ostero. According to C. Jensen (1897, p. 208) the main part 

 of the phanerogam-vegetation is formed by Vaccinium myrtillus, V. uli- 

 ginosum, Cornus suecica, Calluna, Empetrum, Eriophorum polystachyum, 

 Potentilla erecta, Narthecium, Nardus, Rumex acetosa, Anthoxanthum, 

 Juncus squarrosus and Scirpus caespitosus. The more important of 

 the mosses were: Polytrichum commune, P. alpinum, Grimmia hypno- 

 ides, Hylocomium parietinum, H. proliferum, H. loreum, Plagiothecium 

 undulatum, furthcr Diplophyllum albicans, Frullania tamarisci and other 

 species of liverwort. 



This example has been quoted from Jensens paper to show partly 

 the mosses found in the heather-moor, and partly to indicate its arctic- 

 alpine association with Vaccinia resembling the variegated heath of Iceland. 



From these examples we learn that Callnna takes the foremost 

 place amongst the d w^arf-shrubs forming the Færoese heath 

 (heather moor), then come Empetrum and Erica cinerea. More sub- 

 ordinate, but still characteristic we have Vaccininm myrtillns, V. 

 uliginosnm (not common), Thijmns serpyllum and Juniperus commu- 

 nis, var. nana (very rare). Amongst the more dominant herbace- 

 ous piants we may mention: Potentilla erecta, Cornus suecica, 

 Hijpericum pulchrum, Viola silvestris, Polygala serpyllacea and Ga- 

 lium saxatile. The following grass-iike species have their ha- 

 bitat here: Carex binervis (to some extent)\ Anthoxanthum, Festuca 

 ovina vivipara, Luzula multiflora, etc. The ground vegetation of 

 the heath includes a large number of mosses, e. g. Grimmia hyp- 

 noides, Hylocomia, Stereodon ericetorum, Thyidium tamariscifolium, 

 Isothecium tenuinerve, Dicranum scoparium, Polytrichum alpinum, 

 and P. commune, also Diplophyllum albicans, Ptilidium ciliare and 



' Reallj' more characteristic for grass-slopes and sunny rock-ledges. 



