5G 



FAMILIAR LESSONS IX BOTANY. 



AVlien the flowers grow around the stem, as in mint and 

 pennyroyal, they are called a ivliorl (Fig. 93). When the 



Fig. 91. 



Fig. 92. 



Fig. 94. 



receptacle is dilated, bearing flowers above 

 and scale bracts around, as in the sunflower, 

 it is a cajntuliwi (Fig. 94), as seen in com- 

 posite floAvers. The flowers are called 

 florets J those on the outer circle, ray florets; 

 those in the center, disk florets. 



130. You have now had described to you several forms 

 of inflorescence: the cyme^ umhel, corymb, fascicle, head, 

 anient, glomerate, sjjadix, sjnke, raceme, panicle, tliyrse, 

 loliorl, and capitulum. 



131. You have now watched the plant in its growth 

 from root to flower. You have seen the flower withering 

 away, but you have learned that the fertilizing germ always 

 remains. This is supported upon what is called the recepta- 

 cle, on the extremity of the p^ed uncle. 



132. The receptacle supports the fruit and flower, and 

 the fact that it is a separate organ, and not merely the apex 

 of the peduncle, is more obvious in compound flowers than 

 in any other. 



133. Take, for instance, the sunflower. Its receptacle 



130. Recapitulate the various kinds of inflorescence that you have had de- 

 scribed to you. 



131. What is the extreme end of the peduncle called ? 



132. Is the receptacle a separate organ from the peduncle? 



133. In what family of plants do we see this particularly plain ? 



I 



