Fig. 46. Fig. 47. 



Fig. 46. Flower of the pea, Plsum sativum. 

 (After Baillon.) 



Fig. 47. The same dissected, showing vari- 

 ation in form of the petals. (After Figurier.) 



98 • Principles of Plant Culture. 



145. The Parts of the Flower Vary in Form in dif- 

 ferent species. In the pea flower (Fig. 46) the five 

 petals, shown separately in Fig. 47, are not only quite 

 unlike the petals of the cherry flower, but as appears, 



they are unlike 

 'k^]I(j//^ each other. The 



stamens (Fig. 

 48 St.) and the 

 pistil (Fig. 49) 

 of the pea are 

 also quite differ- 

 ent in form 

 from those of 



the cherry. The variety of form in the parts of the 



flowers of different specie^ is j/, 



almost infinite. 



146. Certain Parts of the^^-'' 

 Flower are often Wanting. 

 The flowers of the maple 

 have no corolla; those of the 

 willow have neither calyx nor 

 eorroUa; certain flowers of 

 the pumpkin, Indian corn 

 and many other plants have 

 no stamens, while other flow- 

 ers of the same species have i^™- ,„ „, ^„ ^ ^^ 



'^ Fig. 49. Pistil of the same 



no pistils (153). In many alone. (After Balllon.) 



varieties of the American plums* the pistil is . often 

 wanting. 



Fig. 48. Fig. 49. 

 Fig. 48. Stamens (st) and 

 pistil of the pea, Pisum sat- 



• Prunua Americana, P. anguatlfoUa, P. hortulana. 



