Robert John Thornton ( 1768 - 1837 ) was a British painter. Robert John Thornton s works have been put up for auction numerous times, with realized prices surpassing estimated prices, varying from 1300 USD for Large Flowering Sensitive Plant in 2004 to 64415.7 USD for New Illustration of the Sexual System of Carolus von Linnaeus ... the Temple of Flora, or Garden of Nature. in 2006 , based on th