http://collections.mfa.org/internal/media/dispatcher/1064979/resize%3Aformat%3DfullThe Quadrangular Passion Flower (Plate 19 from Dr. R. J. Thornton, "The Temple of Flora", London, 1799–1807)1802Peter Charles HendersonAquatint and stipple engraving by William Hopwood, printed in color and hand-coloredThe Quadrangular Passion Flower. Pl. 19 from Dr. Robert John Thornton, "The Temple of Flora; or Garden of Nature". Picturesque Botanical Plates of the New Illustration of the Sexual System of Linnaeus. London, 1799-1807.Prints54.7000000000 Centimeter61.0000000000 Centimeterhttp://collections.mfa.org/objects/262107/rdf