CLASS SYNGENE'SIA. 209 



of this class, until you are better acquainted with 

 those that have larger and more simple flowers. 



The class Syngenesia comprehends the flowers 

 which botanists call Compound, that is, which 

 are composed^ like the daisy, of a number of small 

 flowers, or Florets, all placed upon the same 

 receptacle, and within one common calyx: the 

 stamens in each flower being five in number, 

 with distinct filaments, but the anthers united side 

 by side, so as to form a little tube. There are 

 some other flowers, as the Scabious and Teasel, in 

 the class Tetrandria, also composed of florets, but 

 in which the anthers are not united into a cylinder ; 

 these are called Aggregate Flowers. And you 

 must remember this distinction ; for tne general 

 appearance of these plants might otherwise lead 

 you to suppose, that they belonged to the class 

 Syngenesia. 



Compound flowers are all so far alike, that this 

 class has a very perfect natural character, which 

 their general resemblance to the daisy will suf- 

 ficiently point out to you ; but the calyx and the 

 seeds are to be particularly attended to. 



The Calyx consists, sometimes of a single row 

 of leaves or scales ; sometimes of two rows, as 

 in the daisy ; and in some flowers, as in the com- 

 mon artichoke, these scales are placed over each 

 other, alternately, like tiles upon the roof of a 

 house. The calyx, in many instances, opens as 

 p 



