ARTIFICIAL SYSTEM, SOMEWHAT REFORMED. 43 



21. MONOECIA. Stamens and Pistils in differen 

 Flowers, on the same individual plant, fig. 80-84. 

 Qjuercus Robur. 



22. DIOECIA. Stamens and Pistils in different 

 Flowers, on two separate plants, fig. 85-87. Sa- 

 liv herbacea. 88-91. Populus alba. 



23. POLYGAMIA. Stamens and Pistils separate in 

 some Flowers, united in others, either on the 

 same plant, or on two or three different ones ; 

 such different Flowers being, moreover, dissi- 

 milar in their structure in some other respect, 

 fig. 92-95. Ficus Carica. 



24. CRYPTOGAMIA. Stamens and Pistils either 

 imperfectly, or not at all, known, or not capa- 

 ble of being numbered with any precision. See 

 tab. 7-9. 



The Palmce originally constituted an appendix to 

 this system, because their Flowers were too little 

 known to admit of arrangement by the Stamens and 

 Pistils. But that difficulty is now almost entirely re- 

 moved, and the Genera of this tribe are mostly found 

 reducible to the 6th, 21st, or 22d Classes. 



The Orders of the first 13 Classes, Monandria to 

 Polyandria inclusive, are characterized solely by the 

 number of the Styles, or sessile Stigmas, in each Per- 

 fect Flower (65). These Orders are more or less nu- 

 merous in the several Classes, and are distinguished 

 as follows : 



