THE VKGETATION OF THE JUAN FERNANDEZ ISLANDS 92 I 



On the north side of Masatierra much less is left of what I regard as native 

 grass-land; the barren slopes, formerly at least in part forested, are now waste-land. 

 45. (37.) Stipa laef'issitfia-'^ocxdiX.'xon. Ouebrada del Juanango, on gentle slope 

 near the sea above the low barranca, 94 19 17. Dry, sandy soil. 

 II: 2 Polypo^on chilcnsis i 



Stipa lacvissima 5 Sdrpus nodosus i 



Bromus unioloides 2 Setaria imberbis i 



Stipa neesiana 2 Uncinia Douglasii i 



Carex berteroniana i 



A little higher up the composition changes, Carex and Uncinia are more 

 frequent, but at the same time weeds become much more numerous; see St. 50. 



The W aste- 1 an ds on the north side of Masatierra. 



Waste-land extends from (jne end of the island to the other, but no vege- 

 tation analyses were made west of Bahia Cumberland. At best we find a degraded 

 grass-land, where Stipa laevissima and neesiana occur, in cases also Piptochaetiiitn 

 bicolor and Polypogon chilensis, and a stray specimen of Escallonia, Margyricar- 

 pus, Paronychia, Juncus imbricattis, Spergiilaria and Wahlenbergia Berteroi or Lar- 

 rainii may be seen here and there. The flats and lower slopes near the settle- 

 ment which are covered with alluvial soil, look more like a desert than anything 

 else, subject as the are to the eroding forces of the water after every heavy rain 

 (Fig. 5) when the earth carried off colours the sea in the bay, and erosion phe- 

 nomena are observed in most of the denuded valleys near the sea (Figs. 32, 33), 

 Traces of solifluction were distinct enough in Valle Colonial; an example is given 

 in St. 47. 



46. (i.) Barren ridge north of Cerro Damajuana, c. 150 m, 612 1917. Dry, 

 rocky and sandy soil; vascular plants all scattered or forming patches; relative 

 frequency not estimated. 



11:2 I 



Bromus unioloides e on earth s on stones 



Gnaphalium cheiranthifolium s Buellia sp. 



Oenothera molHssima e Cora pavonia 



II: I 



e Diploschistes scrtipostis 

 s Lecanora at/a 



Acaena argentea s Pai»tclia caperata 



Anthoxanthum odoratum gs „ cet?-ata 



BlechniDii auriciilatum s > conspersa 



Dantlw?iia collina es » microsticta 



Hy7nenophyIliim plicatum s „ saxatilis 



Rumex acetosella e Peltigera rujescens 



s Pertusatia Jiad/'ocatpa 

 e Stereocaulo?i proxiiinim 



47. (2 F.) Ugni Molinae-i5/^r/'w/w auric7ilatuni-^oc\di'(\ox\. Valle Colonial, c. 

 30 m, 1212 191 7. Steep micro-terraced talus slope; soil orange-red, sandy-clayey; 

 terrace surface covered with washed-out gravel, edge firm, held together by Blech- 

 nu})i auriculatuni. 



61 —516796. The Xat. Hist, of Juan Fernandez and Easter Isl. Vol. II. 



