^z. 



flowers, ^nd there are often as many as throe buds 

 from an axil. At first tho tip of each bud is pro- 

 tected by three or four alternate bracts, which are 

 soon left bfilow on the stem of the flower head and 

 finally fall off. The first floral orp;an to appear 

 is the outside bract of each flower. As the buds un 

 fold the other two bracts come in successively, one 

 on each side of the flov/er. The sepals appear in 

 pairs, the first pair being anterior and posterior. 

 The petals then arise in one cycle of four rudiments 

 inside which two successive alternating cycles of 

 four rudiments develope. The outer cycle opposite 

 to the lobes of the calyx, becomes stamens, the in- 

 ner sterile staminodes. 



The toiiis has by this time, by iinequal growth, 

 become concave, and on its floor are developed two 

 horse -shoe shaped ridges, one anterior and one pos- 



