SCIENCE PRIMERS. 



[XII. 



Bramble (Fig. 23). Flower regular. Calyx of 5 

 sepals combined at the base. Corolla of 5 free petals. 

 Stamens many, seated on the calyx. Pistil of many 

 free carpels. (Note the different insertion of petals 

 and stamens of buttercup and bramble.) 



FIG, 23. Vertical section of Bramble flower, enlarged. 



Wallflower (Fig. 24, 25). Flower rather irregular. 

 Calyx of 4 free sepals, two inserted lower down than 



FIG. 24. Vertical section of Wall-flower, 

 enlarged. 



FIG. 25. Stamens of Wall 

 flower, enlarged. 



