314 



RIKARD STERNER 



t'ig- 9- 1 he distribution of Avena pratt-nsis in Scan- Fig. lo. The distribution of Pulsatilla vernalis in Scan 



dinavia and Finland. dinavia, Denmark and western Finland. 



O: accidental occurrences. O: uncertain occurrences. 



In Denmark the species occurs chiefly in the north-eastern 

 part of Jutland and on the Islands. 



powerful massing of occurrences of many species in the eastern parts of Central 

 Sweden: on the plains of Uppland, Southern Vastmanland, north-eastern Narike, 

 northern Sodermanland, and also in Ostergotland. The steppe species are especially 

 well represented in the herbaceous hillside flora of Uppland (see Sernander iqo8). 



The northern and north-western distribution limits in South Sweden, which 

 will be further treated below, with regard to the majority of the steppe species 

 coincide with the north-north-westerly boundaries of the Central Swedish plains. 



The following steppe species are remarkable with regard to their distribution 

 on the plains in the South Swedish mainland: Artemisia campestris (Plate 5), 

 Asperula tinctoria (Plate 5), Crepis praemorsa (Fig. 11), Phleum Boehmeri (Plate 

 5), Polygala comosa (Fig. 12), [Pulsatilla pratensis (p. 333)], Ranunculus polyan- 



