The bulbs of the King Alfred daffodil (Narcissus pseudonarcissus L.) have been found to contain a new alkaloid named methylpseudolycorine, as well as the known alkaloids galanthamine, galanthine, lycorenine, homolycorine, haemanthamine and narcissamine. Narcissamine has been shown to be N-demethylgalanthamine. Structures are proposed for pseudolycorine and methylpseudolycorine. © 1956, American Chemical Society. All rights reserved.