The Periwinkle of Java, from Collection of Usual, Curious, and Foreign Plants by Jacques Fabien Gautier d'Agoty https://www.rawpixel.com/image/8996836/image-paper-rose-flowerFree Image from public domain licensePervenche (periwinkle) from La Plante et ses Applications ornementales (1896) illustrated by Maurice Pillard Verneuil.… https://www.rawpixel.com/image/2417482/free-illustration-image-art-nouveau-pattern-vintageFree Image from public domain licenseMadagascar periwinkle (Catharanthus roseus): flowering stem with separate flower. Watercolour. https://www.rawpixel.com/image/13951083/image-flower-plant-artFree Image from public domain licenseMadagascar periwinkle (Catharanthus roseus): flowering stem with separate flowers. Watercolour. https://www.rawpixel.com/image/13964742/image-flower-plant-artFree Image from public domain licensePervenche (periwinkle) from La Plante et ses Applications ornementales (1896) illustrated by Maurice Pillard Verneuil.… https://www.rawpixel.com/image/2417479/free-illustration-image-pattern-art-nouveau-decoFree Image from public domain licensePeriwinkle, Snowdrop, White Rose and Common Heath from The Language of Flowers, or, Floral Emblems of Thoughts, Feelings… https://www.rawpixel.com/image/2098584/beautiful-flower-bouquetFree Image from public domain licensePervenche (periwinkle) from La Plante et ses Applications ornementales (1896) illustrated by Maurice Pillard Verneuil.… https://www.rawpixel.com/image/2419819/free-illustration-image-periwinkle-art-deco-patternFree Image from public domain licenseLight blue forget me not background. Original public domain image from Wikimedia Commons https://www.rawpixel.com/image/3301642/free-photo-image-andrena-animal-beeFree Image from public domain licensePurple forget me not. Original public domain image from Wikimedia Commons https://www.rawpixel.com/image/3301684/free-photo-image-water-iris-blossom-lilacFree Image from public domain licenseFour examples of single flowers: a deadly nightshade, thorn apple, periwinkle and wallflower. Coloured etching by F. Sansom… https://www.rawpixel.com/image/13968846/image-paper-butterfly-flowerFree Image from public domain licenseGreater periwinkle (Vinca major) from Traité des Arbres et Arbustes que l’on cultive en France en pleine terre… https://www.rawpixel.com/image/567704/greater-periwinkle-flowerFree Image from public domain licensePeriwinkle by Pierre-Joseph Redouté (1759–1840). Original from Biodiversity Heritage Library. Digitally… https://www.rawpixel.com/image/263792/free-illustration-image-periwinkle-redoute-pierre-josephFree Image from public domain licensePeriwinkle (Vinca sp.): entire flowering plant. Coloured etching by M. Bouchard, 1772. https://www.rawpixel.com/image/13983638/image-plant-art-patternFree Image from public domain license