271 



In the syst 



iJiein accomp 



ematic list (22 j 788 species are dealt with, many of 

 anied by valuable taxonomic notes. Thirty specie- 

 new to tlie science are described, and two new genera, namely, 

 Pyerophyllopsis, an isolated genus of the Caryoptiyllaceae, winch 

 is compared with Colobanthus, but is not closely related, and 



/ 



ate South America may be phyto- 

 r botanical areas: The Valdivian, 



» O AT — 



The southern part of Temper 

 graphically divided up into foui 



the Cordilleran between 36° 30' and 54° 40', the Patagonian- 

 Fuegian steppe, and the Magellanic. 



Accepting the main divisions suggested by Kngler (Engler and 

 Gilg, Syllabus der Pflanzenfam. pp. 35C-357), the following sub- 

 divisions are in accord with Skottsberg's results : 



III. Central and South American Floral Realm. 



C. Andine Region. 



1. Valdivian Forest Province, 36° 30'-48°. 



(a) Zone of Coast Cordilleras and the longitudinal 

 valleys between 36° 30' and 41°. 



(6) Zone of the islands and the western slopes of the 



Cordilleras between 41° and 48°. 



2. Andine-Patagonian Province. 



(a) Cordillera Zone between 36°-30' and 54° 40'. 



(i.) Northern district up to 41°. 



(ii.) Southern district of the Patagonian- 



Fuegian mountains. 



(6) Patagonian-Fuegian steppe-zone between 41° 



and 54°, stretching eastwards up to the 

 Atlantic Ocean. 



IV. Austral-Antarctic Floral Realm. 



A. South American Snban tare tic Region. 



(a) Magellanic Forest Zone of the West Patagonian- 



Fuegian coasts and islands between 48° and 



56°. 

 (&) AVoodless island zone of the Falkland Islands. 



The climate of the Valdivian Region is characterised by high 

 winter temperature, great precipitation, especially in the winter, 

 and predominating westerly and north-westerly winds. In brief, 

 it may be said that this district has a warm-temperate rain- 

 climate, with comparatively little difference between summer and 

 winter. The district of the West Patagonian canals and islands 

 (the Magellanic Region) may be said to have a bold-temperate, 

 very stormy climate, with very little difference between summer 

 and winter, and with much rain in all parts of the year. The 

 eastern slopes of the Andes are poor in rainfall, and this ia also 

 true of Patagonia. Unfortunately the relatively few published 

 records nearly all concern coast-stations, and since these have a 

 less extreme climate than the inland districts they are not 

 sufficient to give a general idea of the climate, which is largely 

 of the continental type. On the Patagonian-Fuegian tableland 

 there is slight precipitation and dry winds, and clear skies are the 

 rule. 





