*8 ON THE BOTANICAL GEOGRAPHY OF THE 



and materials to assist in the future completion 

 of the subject. 



I shall review in this point the North of Germany, 

 France, Spain, Portugal, and the South of England ; 

 and shall begin by enumerating such plants as are 

 found in the greatest part of Europe, from the 

 54th to the 38th degree of Northern latitude. 

 They are the following ; 

 Aphanes arvensis. 

 Chara vulgaris, and some , other species of this 



genus, Zanichellia palustris, and all species of 



Callitriche. 

 Veronica agrestis and arvensis. 

 Gratiola officinalis and Utricularia vulgaris, 

 Lycopus europseus, Verbena officinalis. 

 Orchis latifolia, Morio. 

 Several species of Lemna. 

 Salix triandra, alba,' decipiens and vitellina are, 



indeed, found occasionally throughout the Well 



of Europe, but become scarcer and scarcer 



towards the South. 

 Fraxinus excelsior. 



