A hand-coloured engraving by John S. Miller [Johann Sebastian Muller] from his book 'Illustratio Systematis Sexualis Linnaei' (Illustration of the Sexual System of Linnaeus). This illustration is titled, 'This Plant Flowered the first time in England with his Grace the Duke of Northumberland in the Garden at Sion [Syon] in Oct & Nov 1771'. Painted, engrav'd and publish'd by J MIller in Dorset Court.