XXIV 



INTRODUCTION. 



with, the specimen in his hand ? On examining a flower 

 (he will do well to select one which is just expanded), 

 he will discover a large number of stamens, evidently 

 more than twenty, inserted in the receptacle, and he 



HELIANTHEMUM VULGAR^. 



will have no doubt that it belongs to the Linnsean 

 Class POLYANDRIA. In the centre of the stamens he 

 will detect a single pistil, and hence will conclude 

 that it should be referred to the Order MONOGYNIA in 

 that Class. He will, accordingly, turn to Class POLY- 



