12 



INTRODUCTION. 



THE ORDERS. 



An order is the first great division of a class, and as stamens 

 distinguish the classes, so the styles denote the orders ; at least 

 in the first thirteenth classes. In those which come after the 

 thirteenth other parts are used for this purpose, and in some of 

 them even the stamens themselves, when not wanted to tell the 

 class. This will be rendered plainer by the following table. 



Applied to the first 13 classes. 



MONOGYNIA ...... 1 Style. 



DIGYNIA ........ 2 Styles. 



TRIGYNIA ........ 3 ,, 



TETRAGYNIA ....4 ,, 



PENTAGYNIA ...,5 ,, 



HEXAGYNIA .... 6 Styles. 



HEPTAGYNIA .... 7 ,, 



DECAGYNIA ...... 10 ,, 



DODECAGYNIA ..12 ,, 

 POLYGYNIA ...... many,, 



Applied to class 14. 



GYMNOSPERMIA. ANGIOSPERMIA. 



Seed apparently naked. Seed in a capsule. 



Applied to class 15. 

 SILICULOSA. Fruit a short pod. SiLiauosA. Fruit a long pod. 



Applied to class 19. 



All the florets perfect, or with stamens and styles. 

 SUPERFLUA. Inner florets perfect ; outer with styles only. 

 FRUSTANEA. Inner florets perfect ; outer without styles. 

 NECESSARIA. Inner florets with stamens; outer with styles only. 

 SEGREGATA. Flowers each with a separate involucre. 



