42 



FLORA OF BRITAIN. 



in Britain ; and it would, perhaps, not be a very erro- 

 neous guess to say that a single mile may contain half 

 the species of a county. 



Arranging the present flora of Britain according to 

 the Natural Orders of Botanists, we have the following 

 distribution of the species, as given in the Flora of Ber- 

 wick, and apparently (from a foot note) founded on cal- 

 culations by Professor Henslow. 



NUMERICAL ESTIMATE OF THE NATURAL ORDERS. 



Orders. 



British. 



English. 



Scottish. 



I. DlCOTYLEDONES. 









Ranunculaceae - 



36 



35 



28 



Berberideas - - - - 



2 



2 



2 



Nymphasaceae - 



3 



3 



3 



Papaveraceae - 



11 



10 



7 



Fumariaceas - 



6 



6 



4 



Cruciferse - 



72 



68 



57 



Cistineae - 



5 



5 



1 



Violarieae - - 



8 



8 



7 



Resedaceas - - - 



3 



3 



2 



Droseraceae - - 



3 



3 



3 



Polygalea? - 



1 



1 



1 



Frankeniaceae - 



2 



2 







Caryophylleae - 



58 



50 



47 



Lineae - 



5 



5 



3 



Malvaceae - - - 



6 



6 



5 



Tiliaceae - 



3 



3 



2 



Hypericineae - 



11 



9 



11 



Acerineaa - 



2 



2 



2 



Geraniaceae - - - 



16 



16 



13 



Balsamineae - 



1 



1 



1 



Oxalideae - 



2 



2 



2 



Celastrineae - 



3 



3 



2 



Rharnneae - - - 



2 



2 



2 



Leguminosae - 



69 



66 



45 



Rosaceae - 



82 



72 



63 



Cucurbitaceae - - - 



1 



1 



1 



Onagrarieae - 



13 



12 



11 



Halorageae - - - 



5 



5 



3 



Hippurideae ..... 



1 



1 



1 



Ceratophylleae ... 



2 



2 



1 



