Seven flowering plants, all species of the genus Tritonia. Coloured lithograph. https://www.rawpixel.com/image/13952268/seven-flowering-plants-all-species-the-genus-tritonia-coloured-lithographFree Image from public domain licenseTwo flowering plants, including a daffodil (Narcissus species) and a liliaceous plant. Colour nature print by A. Auer, c.… https://www.rawpixel.com/image/13965619/image-flower-plant-grassFree Image from public domain licenseVarious leaf forms, leaf arrangements and bulbs. Watercolour by I. Sawkins. https://www.rawpixel.com/image/13964330/various-leaf-forms-leaf-arrangements-and-bulbs-watercolour-sawkinsFree Image from public domain licenseWild tulip (Tulipa sylvestris): flowering plant. Watercolour, 1906. https://www.rawpixel.com/image/13960528/wild-tulip-tulipa-sylvestris-flowering-plant-watercolour-1906Free Image from public domain license