Floral colours and the physiology of vision

Part IV. The queen of flowers
  • C. V. Raman


The flowering treeLagerstroemia Flos Reginae (also known asL. Speciosa) has two varieties bearing purple and pink flowers respectively. Spectroscopic examination shows that the purple colouration represents the entire spectrum of white light in which the limited region from 570 mµ to 590 mµ is absent. The pink colour results from a weakening of the spectrum in the range of wavelengths from 520 mµ to 570 mµ.


Pink Colour Purple Colour Green Sector Purple Flower Floral Colour 
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Copyright information

© Indian Academy of Sciences 1963

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  • C. V. Raman

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