APPENDIX A 



625 



Androecium, stamens indefinite, spirally arranged, free, hypogynous. 



Gynoecium, carpels usually 3, apocarpous, superior. Follicles and their 

 dehiscence as in Caltha. 



Comparing this flower with Ranunculus or Helleborus, it is clearly a zygo- 

 morphic development of the same type. The flower is protandrous. The 

 sepals give colour-attraction, and the honey is conveniently placed for humble- 

 bees in the posterior, spurred petals, while the whole is sheltered by the hood. 

 The protandry makes cross-pollination highly probable from successive visits. 

 After shedding their pollen the filaments curve back so as to expose the 

 receptive stigmas. Self-pollination is thus improbable. 



ORDER : RHOEADALES. 



Family : Papaveraceae. Example : The Red Poppy. 



(18) The Common Corn-Field Poppy (Papaver Rhoeas, L.) is an annual 

 which ripens its seeds before the corn is cut, and it is thus ready to spring 



Fig. 476. 



Red Poppv (Papaver Rhoeas, L.). I. flower and buds, with sepals falling away. 

 II. flower in median section. III. gynoecium. IV. ripe fruit, with dehiscent pores 

 below the star-shaped stigma. V. floral diagram. 



again in the next season. The plant, which is bristly and contains a milky 

 juice, consists of a leafy stem branched below. The solitary flowers are 

 terminal on their long hispid stalks, the buds hanging down, but the stalks 

 are straight when flowering, and in fruit (Fig. 476). The flower consists of : 



Calyx, sepals 2, polysepalous, inferior, falling off at the opening of 

 the bud. 



Corolla, petals 4, polypetalous, inferior, wrinkled in bud, two lateral, two 

 antero-posterior. 



Androecium , stamens indefinite, free, hypogynous. 



