54 



SCIENCE PRIMERS. 



[XII. 



Pea (Fig. 27). Flower irregular. Calyx of 5 com- 

 bined sepals. Corolla of 5 very unequal petals of 

 which the two innermost are combined. Stamens 10, 

 9 united and i free. Pistil of i carpel, with i style 

 and stigma. 



FIG. 27. Section of flower of Pea, enlarged 



FIG 28. Vertical section of flower of China 

 Primrose, enlarged. 



FIG. 29. Transverse sec- 

 tion of ovary, enlarged. 



