B 
Bd. IV: ı2) THE VEGETATION IN SOUTH GEORGIA. 33 
not occur on any place free from ice and snow, where there is any soil, at a height 
of 1000 m or more. But another question is if there is such a place on the island; 
probably everywhere the conditions above 500 m are but little favourable to plant life. 
The moss and lichen tundra is composed as follows: 
Andreaea heterophylla Dieranum aciphyllum f. 
> squamata Grimmia celata 
» Willi > grisea 
Bartramia patens f. austrogeorgica Rhacomitrium nigritum 
» oreadella v. microphylla Webera inflexa 
» pycnocolea 
Brachythecium georgico-glareosum Cladonia pyxidata 
Dicranoweisia brevipes Peltigera rufescens. 
On the rocks and stones: 
Aspicilia pullata Lecidea pantherina 
Buellia melanotrichia > platycarpa 
Lecanora Skottsbergii » subdeclinans 
Lecidea elaeochroma Rhizocarpon geographicum. 
All these species were in fruit. 
Mount Krokisius (Royal Bay). 
The general distribution of plant associations on this mountain are the same as 
described from several localities in Cumberland Bay, though the areas covered with 
elose communities are smaller. On the top (c. 500 m) I found no higher plant, but 
- only mosses and lichens. 
Andreaea Willi Tortula fuscoviridis 
Dicranoweisia subinclinata 
Dicranum aciphyllum Psoroma hypnorum 
Grimmia urnulacea . Sphaerophoron coralloides 
Stieta Freycinetii. 
On stones: 
Neuropogon melaxanthıum Rhizocarpon geographicum 
Ochrolechia parella Sporastatia testudinea, 
all in fruit. ß 
The alpine tundra may be found developed at a much lower altitude, if the 
conditions are unfavourable for vascular plants. On plateaus, exposed to the full force 
of South Georgian gales, mosses and lichens always predominate. I noted this on 
5—121850. Schwedische Südpolar-Expedition 1901—1903. 
