999 



Polygonum viviparum, Vaccinium myrlillus iiygniaeum, Luziila nuiltillora, 

 Fcstuca ovina, Thynius, Ranunculus acer. Euphrasia minima, Agrostis 

 sp., Viola silvestris, Taraxacum sp., Tlialictrum, Silene acaulis, Luzula 

 spicata, Empetrum, Pyrola minor (sterile), Nardus, Cerastium vulgare 

 alpestre, Rumex acetosa alpina, Alchimilla alpina, Saxifraga hypnoides 

 and Sibbaldia. 



5. The sum mit of Hojefjæld, Bordo, about 650 m. A thick 

 and almost unbroken G/v;n mm-carpet covers the northern corner of the 

 summit-plateau. Only a few individual piants of phanerogams, viz: 

 Salix herbacea, Empetrum, Festuca ovina vivipara, Aira alpina, Carex 

 rigida, Vaccinium uliginosum microphvllum, Thalictrum, Lycopodium 

 selago, Taraxacum sp., Armeria, Juncus trifidus, Alchimilla alpina. 



6. Rejafjæld on Ostero. Slopes from about 375 to 540 m. above 

 sea-level, with Grimrnia-heaih in patches, and the following flowering 

 piants as secondary species: Salix herbacea, Sibbaldia, Carex rigida, 

 Lj'copodium selago, Blechnum (sterile and isolated piants), Rumex ace- 

 tosa, Anthoxanthum, Luzula multiflora, Viola silvestris, Juncus squarrosus, 

 Lycopodium alpinum, Galium saxatile, Festuca rubra. Agrostis vulgaris, 

 A. canina, Potentilla erecta, Festuca ovina vivipara. Nardus; the follow- 

 ing lichens were also noted: Cornicularia aculeata, Sphaerophon, Ce- 

 traria islandica, Cladonia rangiferina, C. cervicornis and Thamnolia. 



The phanerogams of the Grimmia-heath are derived from va- 

 rioiis sources, and so may be arranged into groups: 



(1) From the development of the Grimmia-heath it is natural 

 to find ahiiost ah the species of the rocky-flat (see the list p. 994, 

 but Koenigia, Raniinciihis glacialis, and Sediim villosiim do not ap- 

 pear, and the distinctly tufted species are rare). 



(2) A certain number of the species from the heather-moor and 

 the grass-moor, namely the hardier ones (Empetrum, Festuca rubra, 

 Juncus squarrosus, Luzula multiflora, Lycopodium selago, L. alpinum, 

 Galium saxatile. Nardus, Potentilla erecta, Taraxacum (spectabile?), 

 Thalictrum and Viola silvestris). 



(3) A few arctic species and varieties wliich on tlie Færoes are 

 confined to the higher summits, e. g. Carex rigida, Sibbaldia pro- 

 cumbens, Loiseleuria procumbcns, Vaccinium mijrtillus pygmaeum, V. 

 uliginosum microphyllum, and Aira flexuosa montana; the following 

 rare species are also represented here, Gnaphalium supinum, Pyrola 

 minor (an extremely peculiar habitat for this plant) and Luzula 

 arcuata. 



It is noteworthy that a good many of the phanerogams of the 

 Grimmia-heath possess wandering-shoots, adapted to make their 

 way through tlie moss-carpet (e. g. Carex rigida, Vaccinium myr- 

 lillus, Aira flexuosa, Lycopodium alpinum, Pyrola minor, Thalictrum 

 alpinum, etc). Others have tlie decumbent habit with numerous 



