Flower Toadflax fairy. Scientific name: Linaria vulgaris. (common toadflax, yellow toadflax, or butter-and-eggs is a species of toadflax (Linaria), it is a perennial plant, native to the British Isles. Most commonly thought of as a weed, toadflax is sometimes cultivated for cut flowers, because of its ‘shelf life’ in a vase. All Flower Fairies are provided mounted, in conservation quality antique white mount-board, size 10×8 inches, ready to frame. .