326 



CHARACTERS OF LINN^EAN CLASSES. 

 FIG. 118. 



Siliquosa. Siliculo 



CLASS XV. THTRADYNAMIA. Six stamens, four longer than the others. Orders 



Siliquosa, Siliculosa. 



The three following classes are characterised by the more or 

 less complete union of the filaments of the stamens into bundles, 

 or brotherhoods ; on account of which the termination adelphia is 

 applied to the number of such bundles. 



Fro. 119. 



Polyandria. Uodecandria- Decandria. 



CLASS XVI. MoNADELPHfA. Stamens united into a single bundle, forming a tube 

 which surrounds the style. Orders Triandria, Pentandria, Hexandria, Heptandria, 

 Octandria, Decandria, Dodecandria, and Polyandria. 



FXG. 120. 



CLASS XVII, 



Decandria. Octandria. 



FA. Stamens united into two bundles. 

 Hexandria, Octandria and Decandria. 



Orders Pen tan dr ia, 



