Abstract
This paper describes a paper chromatographic method of identification of morning glory (Ipomoea purpurea) seeds used by individuals seeking hallucinatory experiences. The procedure is applicable to a single seed, seed fragments and products of “tea”. A 50 percent aqueous alcoholic extract is chromatographed in a butanol : acetic acid : water system and the pattern visualized by ultraviolet fluorescence, p-dimethylaminobenzaldehyde and ninhydrin spray reagents. The chromatographic patterns of various morning glory seeds and other seeds of criminalistic interest are shown. Milligram quantities of Ipomoea purpurea (two varieties) are readily differentiated from all other seeds examined.
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