Hand drawn bitter orange. Original from Biodiversity Heritage Library. Digitally enhanced by rawpixel. https://www.rawpixel.com/image/2880280/free-illustration-image-orange-fruit-citrus-aurantiumFree Image from public domain licenseVintage png bitter orange clipart illustration https://www.rawpixel.com/image/2881446/free-illustration-png-orange-botanical-citrusView licenseTwo fruiting citrus plants, one possibly the seville orange (Citrus aurantium). Wash drawing. https://www.rawpixel.com/image/13997031/image-paper-plant-artFree Image from public domain license