methylene blue: a dark green dye used as a stain, an antiseptic, a chemical indicator, and an antidote in cyanide poisoning
thiazine: a compound made up of a ring of four carbon atoms and one sulfur atom and one nitrogen atom
livingstone daisy: low-growing showy succulent annual of South Africa having white or pink or red or orange flowers and spatulate leaves covered in papillae that resemble small crystals