Four (4) Dr. Robert John Thorton (United Kingdom, 1768-1837) hand-colored aquatint, mezzotint, and stipple engravings depicting botanical subjects. From TEMPLE OF FLORA : OR GARDEN OF THE BOTANIST POET PAINTER AND PHILOSOPHER, published by Thornton, London, 1812 quarto edition. Engravings include Group of Auriculas, painted by Philip Reinagle (1749-1833), engraved by Joseph Constantine Stadler (active 1780-1812); The Persian Cyclamen, painted by Reinagle; The Dragon Arum, painted by Peter Charles Henderson (d. 1829), engraved by John P. Quilley (active 1812-1842); and American Cowslip, drawn by Henderson, engraved by Stadler. Indistinct watermark dated 1811 visible, Dragon Arum and Persian Cyclamen engravings. Images approx. 9 1/2" H x 7 1/4" W. Dragon Arum Plate approx. 14 3/4" H x 11" W. Sheets approx. 15 1/4" H x 12" W. British, early 19th century. CONDITION: Unframed. Overall good condition with dampstaining and foxing evident on sufrace of sheets and en verso, largest spot 1/2". Plate marks fully visible on Dragon Arum engraving. Auriculas engraving: toning impresstion of text page, lower quadrant and 4 1/8" tear with traces of glue, top center of sheet. 11 5/8" x 8 3/8" area of toning surrounding Cowslip image.