Seselin was detected in the ethanol extract of Naucleopsis caloneura (Moraceae) leaves by TLC. Mass, NMR, UV and IR spectral measurements corroborated the identification. Eugenia biflora (L.) DC. (trivial name 'murta') and Myrcia citrifolia (Aubl.) Urb. (trivial name 'pedra-hume-ca8'), trees of Myrtaceae from Manaus, Brasil. The light petroleum extracts of their leaves were chromatographed on silica, giving p-amyrin and eucalyptin (5-hydroxy-4',7-dimethoxy-6,8-dimethylflavone), m.p. 198-200", acetate, m.p. 245-246" [lit. m.p. resp. 198-200" and 245-246"]. Mass, NMR, UV and IR spectral measurements corroborated the identifications. Eucalyptin has previously been isolated from Australian Eucalyptus and Angophora species. Clematis drummondii (Ranunculaceae) from hills near to Monterrey, N.L. Mexico. Uses unknown. Previous work on sister species.