Four poisonous plants: monk's hood (Aconitum napellus), deadly nightshade (Atropa belladonna), woody nightshade (Solanum… https://www.rawpixel.com/image/13956545/image-butterfly-flower-plantFree 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 license