THE INFLORESCENCE, AND THE FLOWER 



2— -* 

 / 3 



may have the form of a simple convex papilla (i.). But as the growth at the 

 centre is slower than at the periphery, the flower becomes first flattened and 



then hollowed. Five rounded bosses appear on the margin of cup, whi< h arc 

 the five petals (ii.). The hollow surrounded by them deepens, and five other 

 bosses appear internally to, and alternating with them. 



These ar-e the stamens 



S*,^ 





i - 



ovj- 



Fig. 198. 

 i -viii. Successive stages in the development of the individual flower of the 

 Sunflower; i.-vi. in vertical, vii., viii., in transverse section. £ = tiower. 0- 

 bracteole. /> = petal. sr=stamen. c = carpel. s=sepal (i.-v., vii. and vin. -bo 

 vi. x 16.) The shaded zone in vi. is the result of intercalary growth originating at 

 the dotted line in v. 



(hi.). By their formation the hollow is narrowed, and presently from its 

 shoulders two other upgrowths are formed. These are the carpels (iv.). 

 Meanwhile two small outgrowths may be seen at the outside, which previously 

 was smooth. These are two teeth representing the reduced calyx, which thus 

 appears delayed out of the normal succession. The carpels are in contact 

 above and enclose a cavity, which is the ovarian cavity, and the organic apex 

 of the 'flower lies at the bottom of it (v.). It is here that the single ovule arises 

 (vi.), and thus the ovary containing it lies apparently below the other parts. 

 ItVdescribed as inferior, and the flower as epigynons. But it is clear that the 

 b.b. s 



