18 DIFFERENT SRUCTURES OF CALYX. 



seated on the tops of the filaments;... The germen possessing the 

 centre of the receptacle;... the style standing on the top of the 

 germen ;... the stigma seated on the top of the style. When the 

 stigma and style are fallen, the germen grows to a pericarpium, 

 supported by the calyx, and including the seeds, which are af- 

 fixed to the receptacle of the fruit. The receptacle of the flower 

 is generally under the pericarpium, being not so often found to* 

 grow either round it,, or over it. 



CHAP. XI. 



OF THE DIFFERENT STRUCTURES OF THE CALYX, 



HAVING shown the most natural Structure of the parts of the 

 fructification in the last chapter, we come now to their Differ- 

 ences, or variations (which are the foundation of the genera), 

 and their characters ; and of these we shall treat in their order, 

 beginning with the calyx. 



The variations of the calyx, in respect to Number, will take 

 in the terms also that respect its composition, parts, and segments. 



In respect to number, it is either single, as in Primula, and 

 most flowers double, as in Malva, Hibiscus, and BiXA;...or 

 wanting, as in Tulipa, Fritillaria, and manyof the liliaceous 

 flowers*. 



In respect to composition, it is either imbricate, that is, com- 

 posed of various scales, lying over each other, as in Hieracium, 



* It is to be hoped, that the student will not be deterred by these nice observa- 

 tions and distinctions in. the science of botany. Such as may find their memories 

 tec nmeh fatigued may pass en at once to part second^ thfe Sexual System, p. 72. 



Editor, 



