324 



CHARACTERS OF LINN^AN CLASSES. 

 FIG. 1J4. 



Pentagynia. Tetragynia. 



CLASS XL DODECANDRIA. Twelve' to nineteen stamens. Orders Monogynia, Digynia, 

 Trigynia, Tetragynia, Pentagynia, Hexagynia, and Dodecagynia. 



FIG. 115. 



Polygynia. Di-Pentagynia. Monogynia, 



CLASS XII. ICOSANDRIA. Twenty or more stamens inserted into the calyx. 

 Monogynia, Di-Pentagynia, and Polygynia. 



Orders 



To the last mentioned class, however, another character belongs; 

 for in the next class, POLYANDRIA, the number of stamens is 

 also twenty or more. They are distinguished by the mode of 

 insertion of the stamens ; these appearing to arise from the calyx 

 in the former, and from the disk or receptacle in the latter. This 

 distinction, which will be hereafter shown to be important in the 

 Natural System, will be at once understood by comparing a true 

 Rose, Plum, Cherry, or Pear blossom, with a Christmas Rose, 



