112 Chemistrji of Mendelian Factors for Flower-Colour 



Flavone 



Constitutional Formula 



Melting Point 



HO CO 



Products of 



Dec(uui)Osition 



from Alkali Melt 



Pliloroglucin 



and 

 protocateohuio 



acid 



Distribution 



Free and aK various kIuco- 

 sides in Qiicrcits (bark), 

 RhiniDui.i (berries), flowers 

 of Ch('irtinthu.'<, Cratae- 

 fjus, Viohi^ Prnnii.<, Hibis- 

 cus, leaves of Ailantkiis, 

 Rhus,Arctoiita]>hylos, Cal- 

 luna. Eucalyptus and 

 many others 



Myricetin 



HO CO 



357° Pliloroglucin Myrica (bark), leaves of 



and lihuji, Ilannatoxylon, 



gallic acid Aictostnphylos 



Fisetin 



Above 300'^' 



Resoroinol 



and 



protocatechuic 



acid 



Iiliu.i (wood) 



Chrysin 



110 



HO CO 



> 



275° Phloroglucin ropulus (buds) 



and 

 benzoic acid 



Apigenin o 



HO 



HO CO 



347° Phloroglucin haavea oS Apiiim, Reseilit 



and 

 p-oxybenzoic 

 acid 



Luteolin . O 



HO 



HO CO 



OH 

 OH 



> 



327" Phloroglucin Leaves of Reseda, Genista, 



and Digitalis 



protocatechuic 

 acid 



Kampherol O 



HO 



HO CO 



27fi° 



Phloroglucin 



and 

 p-oxybenzoic 



acid 



In flowers of Primus, Del- 

 phitiiuin, leaves of Poly- 

 gonum, Indigofera, Ro- 

 bin i a 



