46 ON THE BOTANICAL GEOGRAFAY OF THE 



Arum maculatum in the North, A. italieum in 

 the South of Europe. 



Just as for Cynoglossum Omphalodes, Ompha- 

 lodes lusitanicum Tourn. is found in Portugal, so 

 is Doronicum plantagineum Tourn. seen there 

 instead of D. Pardalianches. Both the above Por- 

 tuguese species stand in the same relation to the 

 two of Switzerland* with respect to the form of 

 their leaves, &c. 



Bellis sylvestris Cyrill. with B. annua in the 

 most southern parts of Europe, supply the place 

 of B. perennis. 



For Chrysanthemum Leucanthemum a new nearly 

 related species is met with in Portugal. 



From the above we may establish the following 

 propositions : 



1. Many plants are larger in all their parts in 

 southern than in northern regions. This pheno- 

 menon was naturally to be expected from a more 



