Two new alkaloids, viz., methyl ester of N,N-dimethyltryptophan metho cation (I) and precatorine (II), were isolated from the seeds of Abrus precatorius L. (Leguminosae Lotoideae). In addition, abrine, hypaphorine, and two previously uncharacterized bases, now identified as choline and trigonelline (III), were isolated from the seeds. Other parts such as the leaves, stems and roots also furnished the above bases in varying proportions. This is the first report of the occurrence in Nature of trigonelline as the gallic acid ester (II). © 1972.