44 



FLORA OF BRITAIN. 



Orders. 



British. 



English. 



Scottish. 



II. MoNOCOTYLEDONES. 



Hydrocharideae - 



Alismaceae - 



Potameae - - 



Orchideae - - 



Irideae - - 



Amarylideae - 



Asparageae - 



Liliaceae - - - 



Colchicaceae - 



Junceae - 



Restiaceae - 



Aroideae - 



Typhaceae - 



Cyperaceae - 



Gramineae - 



Lemnaceae ~ 



o 



9 



17 



37 

 7 

 5 

 8 



19 

 2 



28 

 1 

 2 

 6 



92 



120 



4 



2 

 9 



17 



34 

 6 

 5 

 7 



19 

 2 



22 

 

 2 

 6 



77 



110 



4 



1 



6 

 15 

 17 



1 



2 



6 



11 



2 



27 



1 



2 



5 



80 



96 



4 



359 



322 



276 



2. BOTANICAL CHARACTER. 



The botanical character of a flora is determined by the 

 predominance of species exhibiting similar peculiarities 

 of form or structure. The classifications of Systematic 

 Botany profess to bring together such species into ima- 

 ginary groups, constituting orders and genera. Hence 

 the numerical predominance of species, referred to the 

 same order or genus, gives a botanical stamp or character 

 to the flora of a country, thus furnishing a ground for 

 comparison of it with the flora of any other. Looking 

 to this test, the character of the British flora, or preva- 

 lence of certain forms in it, will be represented in the 

 following scale ; the numerical estimates before given 

 being adopted. Fractions are overlooked if less than £, 

 otherwise raised to 1. 



COMPARATIVE SCALE OF NATURAL ORDERS. 



Compositac 



form 1 in 11 



Amentacea? 



form 1 in 18 



Gramineae 



- 13 



Rosaceae 



- 19 



Cyperaceic 



- 16 



Cruci ferae 



- 21 



