FLOVVEES. 



29 



( J, fig. 34). The pistil ((7, D, fig. 35) is the female organ 

 aixd stands in the centre of the stamens. It consists of 

 tne ovary . 

 at its base 

 35), 



which con- 

 tains the 

 seeds. The 

 stzjle {if, fig. 

 35) is the 

 erect por- 

 tion, and 

 the stigma 

 33) 



is the small Fi^s. 33 to 35 —Different parts of a flower. Fig. 33, A, the 

 O'landuloUS P^t^^s. 34, a stamen, ^, filament or stalk. B, anther. C, pollen. 

 ^ . 35, the calyx, ovary, pistil united. 5, ovary. C, style. D, stigma. 



body on its 



snmmit that .-eceives the fertilizing powder (pollen) ((7, fig. 

 34) from the anthers. 



Elowers may be deficient in any of these organs except 

 the oxary^ anthers^ and stigma. These are indispensable 

 to fructification, and must be present in some form or other 

 or the fiowers will be barren. 



2d. Sexual Distinctions. — ^The fact that the two sexes 

 or sexual organs, the stamens and pistils.^ are in certain 

 species united on the same fiower, and in others on dif- 

 ferent fiowers, and even on difierent trees, has created 

 the necessity for the following distinctions : 



Trees or plants are called hermajyhrodite (as in fig. 33) 

 when both stamens and pistils are present on the same 

 flower. ]N"early all om* cultivated fruits are of this class. 

 Moncecious^ when the male and female fiowers are borne 

 on the same tree, as in the filbert flower (fig. 36, the 

 male, and the female flowers). Dioecious^ when the 

 male flowers (fig. 37) are on one pliint, and the £&male 



