Echinops sphaerocephalus (common thistle ball);Carthamus tinctorius (yellow safflower thistle) by Maria Sibylla Merian https://www.rawpixel.com/image/8919821/image-flower-plant-artFree Image from public domain licenseRetro flower png Echinops, vintage Japanese art remix from the David Murray collection https://www.rawpixel.com/image/3055876/free-illustration-png-vintage-flowers-japanese-flowerView licenseClassic flower psd Echinops, vintage Japanese art remix from the David Murray collection https://www.rawpixel.com/image/3055872/premium-illustration-psd-vintage-purple-flowers-antique-artView licenseClassic flower vector Echinops, vintage Japanese art remix from the David Murray collection https://www.rawpixel.com/image/3060293/premium-illustration-vector-vintage-antique-artView licenseKitsune azami – May (ca. 1870–1880) painting in high resolution. Original from Library of Congress. Digitally… https://www.rawpixel.com/image/3055884/free-illustration-image-hand-drawing-botanical-drawings-purple-flowersFree Image from public domain license