THE CONTINENTAL FLORA OF SOUTH SWEDEN 



357 



t>epilitorah — has an abundant distribu- 

 tion on the eastern coast of South Sweden. 

 It has also a number of inland occur- 

 rences — sometimes rather isolated — 

 which are, it, is true, situated fairly near 

 to the coast and on somewhat lower 

 levels than those of Cynanchum, but may 

 nevertheless give reason for associating 

 the species from our present point of 

 view (cf. Sernander 1920 a). 



The xerothermic species Melica ciliata 

 (Plate 8) and Draha nnivalis (Plate 8) — 

 the latter of which is mainly Central 

 European — which are so unlike one an- 

 other with regard to their dispersal bio- 

 logy, have distribution areas in the south- 

 east of Sweden which agree in the main 

 along the east coast. As compared with 

 that of Cynanchum, their distribution 

 differs through the fewness of the occur- 

 rences and, as regards Draba, by the 

 existence of some occurrences near Lake 

 Vattern and in Vastergotland; but never- 

 theless the resemblances are striking. 

 These two species are naturally connected 

 with Poa bidbosa (see above p. 331). 



Allium schoenoprasum. which in Germany is found on the banks of rivers, 

 has in the skerries of south-eastern Sweden a rich distribution. Unlike Cynan- 

 chum, it has practically no inland occurrences. The history of its distribution 

 in the region, however, might be conceived to be the same, with the exception 

 that the species has not retained its older shore-occurrences . Tanacetuni vulgar e, 

 which is abundantly represented in the east of Europe in regions subject to 

 fluvial flooding, is very widely distributed in the skerries on the south-eastern 

 coast of Sweden, where it grows in shore thickets. The species has long been 

 cultivated, and it is not impossible that its distribution along the coast is purely 

 secondary. But the opposite is equally possible; and in that case its distribution 

 would be closely connected with that of the preceding species. The same is 

 the case with regard to Asparagus officinalis, which is very abundantly represen- 

 ted in Eastern and Central Europe, where it is especially met with in shore- 

 thickets near lakes and watercourses. 



Fig. 27. The distribution of Sedum album in 

 Sweden, Denmark and Finland. 

 O : probably non-spontaneous occurrences. 

 In Norway the species is pretty abundantly distri- 

 buted in the south-eastern part and occurs rarely 

 on the southern and western coasts, in the north 

 to the fjord of Trondhjem. 



