52 BRITISH EXAMPLES OF THE 



Florets of the radius or circumference ligulate, 

 forming spreading rays. 

 Ex. Daisy, (Bellis) and Aster. 



3. Polygamia Frustranea : ex. Knap-weed, (Cen- 



taurea.) 



4. Polygamia Necessaria. ^ 



5. Polygamia Segregata.^ 



TWENTIETH CLASS.— Gynandria. 



Stamens attached to the Style, above the 

 Germen. Orders 7. Those which contain indi- 

 genous plants are, 



Monandria. Dia7idria. Hexandria. 



1 . Monandria has four subdivisions : 



"Anther of two distinct vertical cells, fixed 

 to the top of the column : 

 Ex. Orchis and Ophyrs. 



* Anther parallel with the stigma : 

 Ex. Ladies'-traces, (Neottia.) 



