LINIs\aSAN ARRANGEMENT. 35 



DO'DECAGY'NIA. About twelve styles. 

 POLYGY'NIA. More than twelve styles. 



It is unnecessary here to explain the orders of the other classes, 

 as the circumstances on which they are founded will be seen by 

 referring to the following Systematic Arrangement of British 

 Plants. 



The Genera are characterized by marks taken from the parts of 

 fructification exclusively, that is, from the calyx, corolla, stamens, 

 pistils, fruit, seed, nectary, and receptacle. 



The Species are distinguished from each other by characters 

 taken from any or all the parts of the plant. 



The Generic Character is of two kinds : the essential, which 

 is short, and consists of the more distinctive circumstances ; and 

 the natural, which consists of a more or less full description of all 

 the organs of fructification. 



The Specific Character is brief, and consists of the circum- 

 stances by which one species is distinguished from every other of 

 the same genus. 



