165 



times recorded, this is nothing compared with Merw which 

 has a mean temperature for January of 0,6 C. (Askhabad 

 - 0,2 C., Petro Alexandrowsk -- 5,5, table 1) and Yekate- 

 rinoslaw which has - - 7,4 C., the minimum temperatures 

 of both localities being nearly - - 20 C. or even less. 



Spain, which as regards July-temperature takes third 

 place, becomes second in this respect since the winter there 

 is much warmer than in Transcaspia (Murcia 9,3 C., Zara- 

 goza 5,2 C., Madrid 4,9 C. in January). The number of 

 annual summer-plants in this case is thus in accordance with 

 the July temperature, not that of January. This leads us 

 to the conclusion that the January temperature may be a 

 major factor only when it is high, while marked differences 

 in the lower temperatures do not seem to be of any import- 

 ance. The data are, however, too scanty to allow us to 

 come to any decisive conclusion. 



Table 5. 



Distribution of the growth-forms of Transcaspian species 

 amongst certain natural orders. 



From table 5 it will be seen which natural orders are 

 specially represented by annual species in the Transcaspian 



