The resin, of the opium poppy, opium, present throughout the plant but concentrated in the sap of the seed capsule, yields, morphine, codeine and other alkaloids called papaverine, laudanine, narcotine, narceine, amurine, nudaurine and protopine. It is likely that some names refer to the same alkaloid.
Morphine is the best known of the alkaloids together with its derivative diamorphine which is better known as heroin.
Photographer: Ray Spence