THE CONTINENTAL FLORA OF SOUTH SWEDEN 261 



Table 5. The yearly average precipitation for certain parts of IVliddle Europe 

 and Southern Russia as well as for places in South Sweden (after Hann 



and Hamberg). 



Les Landes 114 cm. (jothenburg 79 cm. 



Toitiers 66 t, Halmstad 72 > 



Paris 50 » Lund 60 



The Vosges Mountains 154 > Ulricehamn 78 » 



The Harz (Rrocken-suinmit) 170 » Vasteras 4S » 



Kolmar 49 ■> Upsala 54 2 



Bernburg 48 ■-, Skara 55 » 



I'renzlau 46 > Linkoping 52 



Posen 49 5 Vaxio 58 * 



Kiev 53 X Nykoping 56 



Kursk 43 Vastervik 52 > 



Bessarabia 47 » Kalmar 39 



Kazan 39 > Visby 49 



Odessa 40 ) Karlshamn 51 » 



Astrachan 12 — 15 > 



evaporates directly from the surface or is collected and is carried away b)- the 

 watercourses. The evaporation depends inter alia on the temperature, cloudiness, 

 humidity, and motion of the air as well as on the properties of the soil, and 

 consequently, varies a good deal. Nevertheless this is probably not the case to 

 such an extent that the meteorological data become useless as relative measures. 



In connection with precipitation it is appropriate to mention Cloudifiess. This 

 is of importance to the plants owing to its effect on evaporation and the supply of 

 light. Hamberg (1909) has published data on ■>■> Cloudiness and sunshine on the 

 Scandinavian Peninsula-^ . 



Naturally enough these data present certain coincidences with the distribution 

 of precipitation. The western slope of the South Swedish highland thus shows 

 the highest values of cloudiness in South Sweden. They decrease rapidly towards 

 the Baltic. For Oland and Gotland, therefore, the values are very low. 



A comparison between the cloudiness in other parts of Europe gives Table 6 

 (according to Hann 1. c. and Schoenrock 1895). 



A summary of the above statements about the climate of South Sweden 

 assumes the following shape: 



I. Between the upland regions and the plains and coast regions surrounding 

 them considerable difterences prevail with regard to temperature as well as to 

 precipitations and cloudiness. The contrast is specially striking between the 

 western parts of the South Swedish higiiland and the south-eastern coast regions. 



