Bd. IV: 12) THE VEGETATION IN SOUTH GEORGIA. 25 



Barbula pycnopliylla Psiudoleskea calochroa 



Brachythecium subpilosum 



Dicranum aciphylkim Lophozia badia 



tenuicuspidatum » Floerkei. 



South side of Bore valley, slopes towards Pot Harbour (Grytviken). 

 The difference between the different sides of the pass in Bore valley plainly 

 shows the influence of exposure on the vegetation. In a climate so little favourable 

 to plant-growth as that of South Georgia, exposure plays a very great part. On 

 the south slopes the snow is much more easily accumulated, the vegetative season, 

 short enough before, is considerably shortened and little direct sun-shine is enjoyed.' 

 This is sufficient to produce an Antarctic tundra, small patches of mosses between 

 snowdrifts and piles of stones. Only scattered individuals of the Acaenas, Festuca 

 and Phleum were found. 



Bartramia patens Psilopilum antarcticum 



Dicranoweisia subinclinata Rhacomitrium ptychophyllum 



Dicranum laticostatiim Tortula pycnopliylla 



tenuicuspidatum Webera pulvinata. 



Lepyrodon I a guru s 



Pliilonotis scabrifolia Lophozia Hatcheri 



Pogonattim alpinum f. austrogeorgicum » propagulifera. 



South side of Pot Harbour (Grytviken). 



Here are some of the most extensive and pure ''meadows" I have seen in South 

 Georgia (see the map and fig. 3, p. 16) 



greg. Festuca erecta cop. Acaena adscendens (on sandy, 



sunny, wellwatered 

 slopes in pure com- 

 munities, Plate 6) 

 spars. — cop. Phleum alpinum spars.— sol. tenera. 



Of Aira antarctica here and there a pure mat. 



Bartramia diminutiva Dicranum aciphyllum 



patens Grimmia occulta 



Blindia dicranellacea Pogotiatiim alpinum f. ausirogeor- 



Conostomum australe gictim 



Dicranoweisia subinclinata 



' There is a very good description of these phenomena in Will's paper on the vegetation in Royal 

 Bay (see Lit. nr 1). 



4 — 121650. Schwedische Sïïdpolar-Expcdiiion içoi — içoj. 



