272 B T A N I C A L INTRODUCTION. 



XVI. DlADELPIIIA. Two Ordtrs, viz :— 



Pent-octandria, five lo eight stamens ; fumaria longdalis. 

 Decandria, ten stamens m two sets ; Lima bean, lickorice. 



XVII. SYNGENESIA. Five Orders, viz :— 

 Equalis v/ith perfect florets. 



Superflua, disk florets perfect, rays pistillate. 

 Frustanea, rays neutral, disk florets perfect. 

 Necessaria, disk florets barren, rays fertile. 

 Segugata, each floret with a calyx. 



XVIII. GYNANDRIA. Five Onlers, viz : — 

 Monandria ; orchis. 



Diandria ; ladies' slipper. 

 Pentandria ; milkweed. 

 Hexandria j Virginia snake-root. 

 Decandria, wild ginger. 



XIX. MONCECIA. Six Orders, viz:— 

 Monandria ; breadfruit-tree. 



Ti iandria ; sedge, zea mays (Indian com). 



Tetrandria ; mulberry-tree. 



Pentandria ; amaranthus. 



Polyandria ; corylus (hazelnut), arum. 



Monadelphia ; cucumber. 



XX. DICE CIA. Seven Orders, viz:— 

 Diandria ; willo'.y. 

 Triandria ; fig. 



Tetrandria ; mistletoe. ^ 



Pentandria ; hernp. 



Hexandria; honeylocust, and green brier. 



Octandria ; poplar. 



Monadelphia ; red cedar. 



XXI. CRYPTOGAMIA. Six Orders, viz:— 

 First order contains the ferns. 

 Second order ; musai or mosses. 

 Third order ; hepaticse or liverwortai. 

 Fourth order ; algae or seaweed. 

 Fifth order ; lichens. 



Sixth order ; mushrooms. 



