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Fig. 159. Types of flowers in relation to fruits. A, flower of cranesbill {Gera- 

 nium) in which the floral organs develop separately on the receptacle and the 

 base of the pistil is above the bases of the stamens, petals, and sepals (hypogy- 

 nous). The pistil alone becomes the fruit. B, flowers and fruits of pearl bush 

 (Exachorda) in which the bases of the stamens, petals, and sepals develop as 

 a floral cup around the base of the pistil (perigynous) . The floral cup abscises 

 and the pistil alone becomes the fruit. C, vertical section of a flower of pearl 

 bush; D, vertical section of a perigynous flower of peach; E, vertical section of a 

 flower of pear in which the floral cup surrounds and is united with the ovulary 

 (epigynous), and becomes a part of the fruit. 



