438 BOTANICAL GEOGRAPHY. 



qui croissent dans le Departement de Lot (in the Annuaire 

 du Departement, pp. 1845, 1846), extending to Hexan- 

 dria ; F. Schultz, Continuation of the communications 

 on the Orobancheae of France (Ratisbon Flora, 1845, 

 p. 738) ; Desmazieres, Eleventh Contribution to the 

 knowledge of the Cryptogamia of France, containing 

 Fungi (Ann. Sc. nat., 1845, 3, pp. 357-70). 



The excellent observations of Ch. Martins on the cli- 

 mate of France, which were mentioned in the preceding 

 Annual Report, are now. published in greater detail, and 

 have been augmented by a description of the botanico- 

 geographical relations (Fssai sur la Meteorologie et la 

 Geographic botanique de la France ; separate division of 

 the encyclopaedic work, Patria; La France ancienne et 

 moderne. Paris, 8vo). 



The French botanical geography, however, is merely based upon the facts 

 given in Duby's ' Botanicon Gallicum.' The distribution of about 3700 

 Phanerogamous plants through France is shown by a series of lists. 1. 

 1250 species are diffused over the entire country; i. e. they occur in the 

 local floras of Boreau, Godron, Cosson and Germain, and Dumortier, and in 

 Bentham's ' Catalogue of the Mora of the Pyrenees.' 2. About 30 species, 

 most of which are distributed over Central Europe, correspond, in France, to 

 the climate of the Vosges and Seine. (See the preceding Ann. Rep.) 3. 

 About 30 species belonging to the valley of the Rhine, are confined to the 

 Vosges climate : the mountain plants of the Vosges, which, however, appear 

 also to occur on other mountains of France, are separated from these, as 

 also the southern forms of the valley of the Rhine (10 species), but which 

 according to their distribution ought rather to be arranged in the third list. 

 4. About 30 species of plants belonging to the north-west, corresponding to 

 the climate of the Seine. 5. The centre of France forms a transition- 

 district from the north to the south, and has only 3 species peculiar to it. 



6. 750 species belonging to the south of France, correspond to the climate 

 of the Garonne and Rhone, but they also occur in the Mediterranean district. 



7. 800 species are confined to the Mediterranean climate. 8. 500 species 

 belong to the subalpine region of the mountains of France, the level of which, 

 between the 46 and 49 of north latitude, Martins estimates at from 600 m. 

 to 1600m.; south of 45, from 1000m. to 1800m. 9. 300 species grow 

 beyond these limits in the alpine region. The conclusion consists of 

 plants arranged according to the localities. 



In the same paper Martins also publishes the following measurements of 

 the limits of vegetation in Dauphiny : 



